LynxDEVLynxDEV
$ a dev platform by Jack Pritom Soren

Learn. Build.
Grow. For free.

Interactive courses, 220+ DSA problems, and interview prep — handcrafted, zero-cost, and built for engineers who want to ship.

3+
Interactive courses
900+
Interview questions
$0
Forever free
// features

Everything you need to level up

From zero to job-ready — all free, all in one place.

Interactive Courses

Hands-on courses with real exercises and an embedded editor per chapter — structured learning, not just videos.

// interactive-courses

Code Editor

A dedicated browser workspace — write and run JavaScript instantly, save your code as a file, and import it back.

// code-editor

DSA Problems

Practice 220+ DSA problems — beginner drills to LeetCode classics — statement and editor side by side, mark solved as you go.

// dsa-problems

Interview Prep

Practice with 900+ categorized questions and tag-based customization, built around real-world interview chapters.

// interview-prep
// watch & learn

Video tutorials, zero fluff

Curated tutorials from Code Insights by Jack

$ 3 paths to start

Start learning today

Hands-on courses designed to take you from beginner to confident developer — with real exercises, not just videos.

Learn HTML — Build Websites From Scratch

Semantic markup, forms, tables, and accessibility — build real multi-page sites starting from your first chapter.

Beginner·14 chapters

CSS Essentials — Style the Web

Colors, the box model, flexbox, and positioning — style complete layouts like profile cards and hero sections.

Beginner·14 chapters

JavaScript Fundamentals — Code It Yourself

Variables, functions, arrays, and objects — write and run real programs in the embedded browser editor.

Beginner·14 chapters