हिन्दी Learn to code, one focused lesson at a time.
Hands-on tutorials for C, Python and more — split into bite-sized segments you can read as a page or watch as 30-second shorts, in your language.
Programming Languages
Advanced Java — Beyond the basics — lambdas and streams, concurrency, the JVM, JDBC, and the enterprise stack. (38 lessons)Bash / Shell Scripting — Build practical foundations in Bash / Shell Scripting, from first scripts to reliable programs. (25 lessons)C Programming — The foundational systems language behind operating systems, compilers and embedded devices. (36 lessons)Core Java — The language fundamentals — syntax, the JVM, object-oriented design, collections and exceptions. (38 lessons)C++ — From your first compiled program to STL, memory, and interview-ready problem solving. (25 lessons)Dart — Build practical foundations in Dart. (25 lessons)C#/.NET — Build practical foundations in C#/.NET. (25 lessons)Go (Golang) — Build clear, fast services with Go fundamentals, concurrency, testing, and HTTP. (27 lessons)JavaScript — The language of the web — dynamic, asynchronous, and running everywhere from browsers to servers. (38 lessons)Kotlin — Learn Kotlin syntax, null safety, objects, collections, and coroutines. (25 lessons)PHP — Build practical foundations in PHP, from first scripts to reliable programs. (25 lessons)Python — A readable, batteries-included language for scripting, data science, web and automation. (47 lessons)Rust — Learn Rust foundations, ownership, safe memory, error handling, and concurrency. (25 lessons)Swift — Build practical foundations in Swift. (25 lessons)TypeScript — JavaScript with static types — catch bugs before you ever run the code. (26 lessons)Computer Science Fundamentals
Frontend Development
Angular — A TypeScript framework for building fast, structured single-page web apps. (30 lessons)Astro — Build practical foundations in Astro. (25 lessons)Bootstrap — Build practical foundations in Bootstrap. (25 lessons)CSS — Style, layout and motion for the web — from box model to Grid and animation. (28 lessons)CSS Architecture — Build practical foundations in CSS Architecture. (25 lessons)HTML — The markup language that structures every web page — learn to build one tag at a time. (28 lessons)Next.js — Build practical foundations in Next.js. (25 lessons)Nuxt — Build practical foundations in Nuxt. (25 lessons)npm / pnpm / yarn — Build practical foundations in npm / pnpm / yarn. (25 lessons)React — Build practical foundations in React. (25 lessons)Redux Toolkit / Zustand — Build practical foundations in Redux Toolkit / Zustand. (25 lessons)RxJS — Build practical foundations in RxJS. (25 lessons)Sass / SCSS — Build practical foundations in Sass / SCSS. (25 lessons)Svelte / SvelteKit — Build practical foundations in Svelte / SvelteKit. (25 lessons)Tailwind CSS — Build practical foundations in Tailwind CSS. (25 lessons)TanStack Query — Build practical foundations in TanStack Query. (25 lessons)Vite — Build practical foundations in Vite. (25 lessons)Vue.js — Build practical foundations in Vue.js. (25 lessons)Web Accessibility — Build practical foundations in Web Accessibility. (3 lessons, Coming soon)Babel / SWC — Build practical foundations in Babel / SWC. (3 lessons, Coming soon)ESLint + Prettier — Build practical foundations in ESLint + Prettier. (3 lessons, Coming soon)Progressive Web Apps — Build practical foundations in Progressive Web Apps. (3 lessons, Coming soon)Responsive & Mobile-First Design — Build practical foundations in Responsive & Mobile-First Design. (3 lessons, Coming soon)SEO for Developers — Build practical foundations in SEO for Developers. (3 lessons, Coming soon)Storybook — Build practical foundations in Storybook. (3 lessons, Coming soon)Web Performance — Build practical foundations in Web Performance. (3 lessons, Coming soon)Webpack — Build practical foundations in Webpack. (3 lessons, Coming soon)Backend Development
Express.js — A minimal, unopinionated Node.js framework for building web servers and APIs. (23 lessons)Node.js — A JavaScript runtime for servers, CLIs and tooling, built on Chrome's V8 engine. (28 lessons)REST API Design — Designing clean, predictable HTTP APIs: resources, status codes, versioning, auth, and the conventions that make an API pleasant to use. (24 lessons)API Design & Versioning — Build practical foundations in API Design & Versioning. (3 lessons, Coming soon)Authentication & Authorization — Build practical foundations in Authentication & Authorization. (3 lessons, Coming soon)Cron & Scheduled Jobs — Build practical foundations in Cron & Scheduled Jobs. (3 lessons, Coming soon)Django / FastAPI — Build practical foundations in Django / FastAPI. (3 lessons, Coming soon).NET Core — Build practical foundations in .NET Core. (3 lessons, Coming soon)Fastify — Build practical foundations in Fastify. (3 lessons, Coming soon)GraphQL — Build practical foundations in GraphQL. (3 lessons, Coming soon)gRPC — Build practical foundations in gRPC. (3 lessons, Coming soon)Keycloak / Auth0 — Build practical foundations in Keycloak / Auth0. (3 lessons, Coming soon)BullMQ / Celery — Build practical foundations in BullMQ / Celery. (3 lessons, Coming soon)Apache Kafka — Build practical foundations in Apache Kafka. (3 lessons, Coming soon)Laravel — Build practical foundations in Laravel. (3 lessons, Coming soon)NestJS — Build practical foundations in NestJS. (3 lessons, Coming soon)OpenAPI / Swagger — Build practical foundations in OpenAPI / Swagger. (3 lessons, Coming soon)OWASP Top 10 — Build practical foundations in OWASP Top 10. (3 lessons, Coming soon)Postman / Insomnia — Build practical foundations in Postman / Insomnia. (3 lessons, Coming soon)RabbitMQ — Build practical foundations in RabbitMQ. (3 lessons, Coming soon)Rate Limiting & Throttling — Build practical foundations in Rate Limiting & Throttling. (3 lessons, Coming soon)WebSockets & Server-Sent Events — Build practical foundations in WebSockets & Server-Sent Events. (3 lessons, Coming soon)Redis Pub/Sub & Streams — Build practical foundations in Redis Pub/Sub & Streams. (3 lessons, Coming soon)Secrets Management — Build practical foundations in Secrets Management. (3 lessons, Coming soon)Spring Boot — Build practical foundations in Spring Boot. (3 lessons, Coming soon)Databases & Data Stores
MongoDB — A flexible, JSON-style NoSQL document database for modern applications. (22 lessons)MySQL — The world's most popular open-source relational database, and the SQL that drives it. (28 lessons)Redis — A blazing-fast in-memory data store for caching, sessions, queues and real-time data. (18 lessons)ClickHouse / BigQuery / Snowflake — Build practical foundations in ClickHouse / BigQuery / Snowflake. (3 lessons, Coming soon)Cassandra / DynamoDB — Build practical foundations in Cassandra / DynamoDB. (3 lessons, Coming soon)Database Migrations — Build practical foundations in Database Migrations. (3 lessons, Coming soon)Elasticsearch — Build practical foundations in Elasticsearch. (3 lessons, Coming soon)Hibernate / JPA — Build practical foundations in Hibernate / JPA. (3 lessons, Coming soon)Mongoose — Build practical foundations in Mongoose. (3 lessons, Coming soon)Prisma / TypeORM / Sequelize — Build practical foundations in Prisma / TypeORM / Sequelize. (3 lessons, Coming soon)PostgreSQL — Build practical foundations in PostgreSQL. (3 lessons, Coming soon)SQL Deep Dive — Build practical foundations in SQL Deep Dive. (3 lessons, Coming soon)SQLAlchemy — Build practical foundations in SQLAlchemy. (3 lessons, Coming soon)Vector Databases — Build practical foundations in Vector Databases. (3 lessons, Coming soon)DevOps, Cloud & Infrastructure
AWS — Cloud computing with AWS: compute, storage, networking, and the managed services that power modern apps. (26 lessons)CI/CD — Automating the path from code commit to production: continuous integration, continuous delivery, and continuous deployment. (21 lessons)Docker — Package, ship and run any app the same way, everywhere — with containers. (26 lessons)Git — The distributed version control system that tracks every change to your code. (26 lessons)GitHub — Host your Git repositories and collaborate on code with pull requests, issues and CI. (18 lessons)Linux — Master the command line and the Linux fundamentals that power servers, containers and the cloud. (29 lessons)Ansible — Build practical foundations in Ansible. (3 lessons, Coming soon)Azure — Build practical foundations in Azure. (3 lessons, Coming soon)Branching Strategies — Build practical foundations in Branching Strategies. (3 lessons, Coming soon)CDN — Build practical foundations in CDN. (3 lessons, Coming soon)Container Registries & Image Security — Build practical foundations in Container Registries & Image Security. (3 lessons, Coming soon)Conventional Commits & Semantic Release — Build practical foundations in Conventional Commits & Semantic Release. (3 lessons, Coming soon)cPanel / WHM — Build practical foundations in cPanel / WHM. (3 lessons, Coming soon)Datadog / New Relic — Build practical foundations in Datadog / New Relic. (3 lessons, Coming soon)Blue-Green & Canary Deployments — Build practical foundations in Blue-Green & Canary Deployments. (3 lessons, Coming soon)DNS, SSL/TLS & Certificate Management — Build practical foundations in DNS, SSL/TLS & Certificate Management. (3 lessons, Coming soon)Docker Compose — Build practical foundations in Docker Compose. (3 lessons, Coming soon)ELK / Elastic Stack — Build practical foundations in ELK / Elastic Stack. (3 lessons, Coming soon)Google Cloud Platform — Build practical foundations in Google Cloud Platform. (3 lessons, Coming soon)GitHub Actions — Build practical foundations in GitHub Actions. (3 lessons, Coming soon)GitLab / Bitbucket — Build practical foundations in GitLab / Bitbucket. (3 lessons, Coming soon)GitLab CI / Jenkins — Build practical foundations in GitLab CI / Jenkins. (3 lessons, Coming soon)HAProxy — Build practical foundations in HAProxy. (3 lessons, Coming soon)Helm — Build practical foundations in Helm. (3 lessons, Coming soon)Kubernetes — Build practical foundations in Kubernetes. (3 lessons, Coming soon)Load Balancing & Reverse Proxies — Build practical foundations in Load Balancing & Reverse Proxies. (3 lessons, Coming soon)Nginx — Build practical foundations in Nginx. (3 lessons, Coming soon)Logging, Metrics, Tracing & Alerting — Build practical foundations in Logging, Metrics, Tracing & Alerting. (3 lessons, Coming soon)OpenTelemetry — Build practical foundations in OpenTelemetry. (3 lessons, Coming soon)PaaS / Hosting — Build practical foundations in PaaS / Hosting. (3 lessons, Coming soon)Packer — Build practical foundations in Packer. (3 lessons, Coming soon)Prometheus + Grafana — Build practical foundations in Prometheus + Grafana. (3 lessons, Coming soon)Pulumi — Build practical foundations in Pulumi. (3 lessons, Coming soon)Rackspace — Build practical foundations in Rackspace. (3 lessons, Coming soon)Build & Release Pipelines — Build practical foundations in Build & Release Pipelines. (3 lessons, Coming soon)Sentry — Build practical foundations in Sentry. (3 lessons, Coming soon)Serverless & Edge — Build practical foundations in Serverless & Edge. (3 lessons, Coming soon)Shell Scripting — Build practical foundations in Shell Scripting. (3 lessons, Coming soon)SSH & Server Hardening — Build practical foundations in SSH & Server Hardening. (3 lessons, Coming soon)Terraform — Build practical foundations in Terraform. (3 lessons, Coming soon)System Design & Architecture
System Design — How to design large-scale systems: requirements, estimation, building blocks, and trade-offs for scale and reliability. (32 lessons)API Gateway & Service Mesh — Build practical foundations in API Gateway & Service Mesh. (3 lessons, Coming soon)Caching Strategies & CDN Design — Build practical foundations in Caching Strategies & CDN Design. (3 lessons, Coming soon)CAP Theorem & Consistency Models — Build practical foundations in CAP Theorem & Consistency Models. (3 lessons, Coming soon)Cost & Capacity Estimation — Build practical foundations in Cost & Capacity Estimation. (3 lessons, Coming soon)High-Level & Low-Level Design Interview Problems — Build practical foundations in High-Level & Low-Level Design Interview Problems. (3 lessons, Coming soon)Event-Driven Architecture & CQRS — Build practical foundations in Event-Driven Architecture & CQRS. (3 lessons, Coming soon)Monolith vs Microservices — Build practical foundations in Monolith vs Microservices. (3 lessons, Coming soon)Rate Limiting, Circuit Breakers & Resilience Patterns — Build practical foundations in Rate Limiting, Circuit Breakers & Resilience Patterns. (3 lessons, Coming soon)Scalability, Availability & Reliability — Build practical foundations in Scalability, Availability & Reliability. (3 lessons, Coming soon)Load Balancing & Sharding — Build practical foundations in Load Balancing & Sharding. (3 lessons, Coming soon)Testing & Quality
API Testing — Build practical foundations in API Testing. (3 lessons, Coming soon)Contract Testing — Build practical foundations in Contract Testing. (3 lessons, Coming soon)Playwright & Cypress — Build practical foundations in Playwright & Cypress. (3 lessons, Coming soon)JUnit 5 & Mockito — Build practical foundations in JUnit 5 & Mockito. (3 lessons, Coming soon)Jest, Vitest & Testing Library — Build practical foundations in Jest, Vitest & Testing Library. (3 lessons, Coming soon)Load & Performance Testing — Build practical foundations in Load & Performance Testing. (3 lessons, Coming soon)PHPUnit — Build practical foundations in PHPUnit. (3 lessons, Coming soon)pytest — Build practical foundations in pytest. (3 lessons, Coming soon)Static Analysis — Build practical foundations in Static Analysis. (3 lessons, Coming soon)TDD & BDD — Build practical foundations in TDD & BDD. (3 lessons, Coming soon)Test Pyramid, Mocking, Fixtures & Coverage — Build practical foundations in Test Pyramid, Mocking, Fixtures & Coverage. (3 lessons, Coming soon)Testing Fundamentals — Build practical foundations in Testing Fundamentals. (3 lessons, Coming soon)Artificial Intelligence & Data
AI Agents & Tool Use / MCP — Build practical foundations in AI Agents & Tool Use / MCP. (3 lessons, Coming soon)AI Coding Assistants — Build practical foundations in AI Coding Assistants. (3 lessons, Coming soon)AI Safety, Evaluation & Cost Control — Build practical foundations in AI Safety, Evaluation & Cost Control. (3 lessons, Coming soon)Apache Airflow — Build practical foundations in Apache Airflow. (3 lessons, Coming soon)Artificial Intelligence — Build practical foundations in Artificial Intelligence. (3 lessons, Coming soon)Data Warehousing & Modelling — Build practical foundations in Data Warehousing & Modelling. (3 lessons, Coming soon)Deep Learning & Neural Networks — Build practical foundations in Deep Learning & Neural Networks. (3 lessons, Coming soon)Embeddings & Vector Search — Build practical foundations in Embeddings & Vector Search. (3 lessons, Coming soon)ETL / ELT Pipelines — Build practical foundations in ETL / ELT Pipelines. (3 lessons, Coming soon)Fine-tuning vs Prompting — Build practical foundations in Fine-tuning vs Prompting. (3 lessons, Coming soon)LangChain / LlamaIndex — Build practical foundations in LangChain / LlamaIndex. (3 lessons, Coming soon)Claude API / OpenAI API Basics — Build practical foundations in Claude API / OpenAI API Basics. (3 lessons, Coming soon)Large Language Models — Build practical foundations in Large Language Models. (3 lessons, Coming soon)Machine Learning Basics — Build practical foundations in Machine Learning Basics. (3 lessons, Coming soon)NumPy / Pandas / scikit-learn — Build practical foundations in NumPy / Pandas / scikit-learn. (3 lessons, Coming soon)Prompt Engineering — Build practical foundations in Prompt Engineering. (3 lessons, Coming soon)RAG — Build practical foundations in RAG. (3 lessons, Coming soon)Apache Spark — Build practical foundations in Apache Spark. (3 lessons, Coming soon)Tools & Developer Productivity
Debugging & Profiling — Build practical foundations in Debugging & Profiling. (3 lessons, Coming soon)Docker Desktop — Build practical foundations in Docker Desktop. (3 lessons, Coming soon)Figma for Developers — Build practical foundations in Figma for Developers. (3 lessons, Coming soon)Jira / Linear & Agile Workflow — Build practical foundations in Jira / Linear & Agile Workflow. (3 lessons, Coming soon)Mailgun — Build practical foundations in Mailgun. (3 lessons, Coming soon)Markdown & Documentation — Build practical foundations in Markdown & Documentation. (3 lessons, Coming soon)Regular Expressions — Build practical foundations in Regular Expressions. (3 lessons, Coming soon)1Password / Secrets Hygiene — Build practical foundations in 1Password / Secrets Hygiene. (3 lessons, Coming soon)Terminal Setup — Build practical foundations in Terminal Setup. (3 lessons, Coming soon)VS Code — Build practical foundations in VS Code. (3 lessons, Coming soon)Career & Interview Prep
GeeksWithGeeks — Hands-on tutorials for C, Python and more — split into bite-sized segments you can read as a page or watch as 30-second shorts, in your language.