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Sachin Maurya
Sachin Maurya

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I just shipped v3.0 of Frontend Master Prep Series — Study Paths, 374+ Q&A, 65 Coding Problems & 500+ Flashcards

#react #webdev #javascript #career

A while back, I shared two big milestones in my frontend prep journey:

  1. A list of 650+ frontend interview questions — the raw brain-dump that started it all.
  2. v2.0 of Frontend Master Prep Series — where that list evolved into a more structured “frontend mastery system.”

Since then, the repo has kept growing — but more importantly, how you use it has changed.

Developers didn’t just want more content.
They wanted:

  • Clear entry points (What do I do if my interview is tomorrow vs in 4 weeks?)
  • A way to revise quickly without scrolling through massive markdown files
  • A path that feels like a learning system, not just a massive question bank

So v3.0 is all about that.

Less “here are a thousand things you could read.”
More “here’s exactly how to use this to get better, fast.”

What’s new in v3.0?

Here’s what this release focuses on.

1. Guided Quick Start paths

The README now starts with four clear ways to begin:

  • 4-Week Sprint → A complete study plan for people targeting interviews in a month
  • Interview Tomorrow? → A 30-card flashcard deck for last-minute revision
  • Daily Practice → A consistent routine with Essential 50 + coding problems
  • Interactive Study → A flashcard web app you can open in your browser

Instead of wondering “Where do I start?”, you pick the path that fits your timeline and dive in. (GitHub)

2. A cleaner content model (with real numbers)

The repo is now explicitly framed around three pillars:

✅ Core Q&A

  • 374+ Q&A across 16 topics
  • JavaScript, TypeScript, React, Next.js, HTML/CSS, Testing, Performance, Accessibility, Security, System Design, Browser, Networking, PWA, Tooling, i18n, SEO
  • Each with explanations, follow-up questions, mistakes, and real-world context (GitHub)

This is the “deep reading + understanding” layer.

✅ Coding Problems

  • 65 problems live right now, targeting 185+
  • Categories: JS fundamentals, DOM, React problems, algorithms, UI components, system implementations, company-style questions
  • Each problem aims to include: multiple solution approaches, tests, complexity, and real-world use cases (GitHub)

This is where you move from knowing to doing.

✅ Flashcards + Web App

  • 514+ flashcards spread across curated decks and topic decks
  • Curated decks like Essential 50, Pre-Interview 30, Daily Review 20
  • Topic decks for JS, React, TS, Next.js, HTML/CSS, Performance, etc.(GitHub)

  • Two formats:

    • Markdown (for GitHub / Obsidian / VS Code)
    • An interactive React app with spaced repetition (SM-2), local storage, and progress tracking

This is your “maintenance mode” — keeping your brain warm daily.

3. A dev-friendly, scalable structure

One big change in v3.0 is treating the repo like a real product, not just a folder of notes.

Here’s the updated structure straight from the repo:

Frontend-Master-Prep-Series/
├── 01-javascript/          # Core JS concepts, async, engine internals (53 files)
├── 02-typescript/          # Type system, generics, advanced patterns (22 files)
├── 03-react/               # Hooks, patterns, performance, internals (71 files)
├── 04-nextjs/              # App Router, SSR, ISR, Server Components (16 files)
├── 05-html-css/            # Semantics, layouts, modern CSS (19 files)
├── 06-testing/             # Jest, RTL, E2E, testing patterns (5 files)
├── 07-performance/         # Core Web Vitals, optimization (6 files)
├── 08-accessibility/       # WCAG, ARIA, keyboard navigation (17 files)
├── 09-security/            # XSS, CSRF, auth, headers (6 files - expanding)
├── 10-system-design/       # Component & frontend design patterns (4 files)
├── 11-browser/             # Rendering pipeline, storage APIs (3 files)
├── 12-networking/          # HTTP/2/3, caching, CDNs (3 files)
├── 13-pwa/                 # Service workers, offline-first (3 files)
├── 14-tooling/             # Webpack, Vite, Babel (3 files)
├── 15-i18n/                # Localization, RTL, formatting (3 files)
├── 16-architecture/        # Coming soon - frontend architecture patterns
├── 17-seo/                 # Technical SEO, structured data (2 files)
├── 18-coding-challenges/   # 65 coding problems
│   ├── 01-javascript-fundamentals/
│   ├── 02-dom-manipulation/
│   ├── 03-react-problems/
│   ├── 04-algorithms/
│   ├── 05-ui-components/
│   └── 06-performance/
├── 19-flashcards/          # 514+ flashcards
│   ├── curated-decks/
│   └── by-topic/
├── src/                    # Flashcard web app (React + Vite)
├── public/                 # Static assets, manifest
└── resources/              # Study guides, checklists, learning paths
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This is intentional: if someone clones the repo, they immediately understand where everything lives and how to extend it.

4. Study paths baked into the README

You no longer have to invent your own plan.

The README now includes:

  • A 4-week sprint plan (week-by-week focus + time estimates)
  • A Daily Practice path for long-term growth
  • An “Interview Tomorrow?” checklist that tells you exactly what to hit in 30–60 minutes (GitHub)

This makes the repo usable for:

  • Panic revision
  • Structured, medium-term prep
  • Slow, consistent mastery

The GitHub repo

👉 Frontend Master Prep Series v3
https://github.com/maurya-sachin/Frontend-Master-Prep-Series (GitHub)

Open it in VS Code, Obsidian, or straight in the browser.
Use it as a reference, a study plan, or a daily practice system.

Why this version matters

The first post (650+ questions) was about volume.
The second one (v2.0) was about turning that volume into a mastery system.

v3.0 is different.

This release is about experience:

  • How fast can you get from “I found this repo” to “I’m using it daily”?
  • How easy is it to switch between reading, solving, and revising?
  • Can you use it whether you have 10 minutes or 2 hours?

I’ve tried to answer those questions with:

  • Clear quick-start paths
  • A predictable structure
  • A flashcard app that actually respects how memory works
  • Study plans you don’t have to design yourself

What’s next?

I’m actively working on:

  • Filling out Architecture and System Design sections
  • More company-style question sets
  • Expanding React + Next.js patterns
  • More performance & networking case studies
  • Potentially a Notion/Obsidian template wired to this structure

If there’s something specific you’d like:

  • A deck for a specific company?
  • More problems in a certain category?
  • A deep-dive on a topic inside this repo?

Open an issue, comment on the repo, or ping me — I’m building this in public and your feedback genuinely shapes the roadmap.

Why I keep building this

Honestly, I built this for myself first.

I wanted to:

  • Stop prepping from scattered YouTube playlists and notes
  • Have a single place that respects both interview prep and real-world engineering
  • Turn my own interview scars into something useful for other devs

If even one developer walks into their next interview a little more confident because of this repo, all the late-night organizing, refactoring, and writing has already paid off.

⭐ If this helps you, consider:

  • Starring the repo
  • Sharing it with a friend who’s prepping
  • Sending feedback so v4.0 can be even better

Let’s make frontend interview prep feel less chaotic — and a lot more intentional.

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