ENGINEERING STUDY

Learn the idea—or review it for an interview.

The same technical library, now with two clear entry modes. Learning mode starts from mental models and examples. Interview mode starts from real questions and complete answers.

01 · LEARNING MODE

Build the mental model first

Read curated explanations, code examples and connected concepts without the pressure of answering anything.

JavaScriptConcept notes →ReactMental models →Next.jsArchitecture notes →AlgorithmsVisual reading lessons →

02 · INTERVIEW MODE

Read real questions with full answers

Use the large JavaScript and React banks as an interview reference. Questions, explanations, code and common traps are kept together.

JavaScript518 questions →React356+ questions + projects →Next.js18 curated Q&A →DSA112 topics →

TECHNICAL SHELVES

Browse by technology

You can ignore the modes and simply open the shelf you need today.

JavaScript

Runtime, language mechanics and interview questions.

React

Hooks, rendering, architecture, questions and project patterns.

Next.js

App Router, RSC, caching and production architecture.

Algorithms & DSA

Readable lessons, code and interview context.

GUIDED PATH

Need an order? Use the reading path.

A dependency-aware roadmap from JavaScript fundamentals to React, Next.js and algorithms.

Open reading path →