Practical courses, documentation-style notes.

Browse guided topics, read compact notes, and practice problems — all without login. Learn DSA, Java, Web and more.

Featured courses

Learn at your pace. Open notes, structured topics, quick practice.

Problem solving, arrays, linked lists, trees, graphs, complexity analysis.

Open Course

Core Java, OOP, collections, concurrency basics.

Open Course

HTML, CSS, JavaScript, building static sites and small apps.

Open Course

Compact, search-friendly notes organized by topics and subtopics.

Click a topic and content loads instantly — no full page refresh.

A practice area to soon host coding challenges and assessments.