Structured quick-reference guides covering the full MERN + Next.js stack. Built for fast revision before interviews — not tutorials, just the things that matter.
Complete HTML cheat sheet covering document structure, semantic elements, forms, media, accessibility, and common interview traps.
Complete CSS cheat sheet covering the cascade, selectors, box model, flexbox, grid, positioning, animations, and responsive design.
Complete Tailwind CSS cheat sheet covering utility classes, responsive design, dark mode, custom configuration, and common UI patterns.
Complete JavaScript cheat sheet covering types, scope, closures, async/await, the event loop, DOM manipulation, and ES6+ features.
Complete Node.js cheat sheet covering the runtime, modules, fs, streams, Express, authentication patterns, and security best practices.
Complete TypeScript cheat sheet covering types, interfaces, generics, utility types, decorators, and common interview patterns.
Complete MongoDB cheat sheet covering CRUD, query operators, aggregation pipeline, Mongoose ODM, indexing, and schema design patterns.
Complete PostgreSQL cheat sheet covering SQL fundamentals, joins, indexes, transactions, window functions, JSON support, and query optimization.
Complete React cheat sheet covering components, JSX, all hooks, state management, performance optimization, and common patterns.
Complete Next.js cheat sheet covering App Router, Server Components, data fetching, caching, Server Actions, middleware, and rendering.
Complete Git cheat sheet covering core concepts, branching, merging, rebasing, undoing changes, workflows, and common interview patterns.
Complete Docker cheat sheet covering containers, images, Dockerfile, volumes, networking, Docker Compose, and common interview patterns.
System design fundamentals covering scalability, caching, databases, load balancing, CAP theorem, common patterns, and how to approach design interviews.