Why I made this site
I am a full stack developer and AI engineer from Pakistan. I build web apps and AI tools for a living.
When I was a student, good Computer Science notes were hard to find: blurry PDFs, pages full of ads, and answers with no explanation. This site is the one I wanted then.
Every topic follows the new PCTB textbook, explained in simple English, with diagrams, code you can run, MCQs with explanations and exam questions with model answers.
How the content is made
I write each topic from the book, chapter by chapter, in my own words.
Definitions are quoted from the book, with the book and topic number.
Every topic is checked against the book before it is published, and the date is shown on the page.
When a student reports a mistake, I fix it and list the fix on the Errata page.
