About SpicyLearn

SpicyLearn teaches how web software works under the hood: React, JavaScript, APIs, system design and more. Each lesson starts with a small program. You predict what it does, then the lesson walks through why, step by step.

Every lesson has a short video on YouTube, and every video links back to its lesson here.

Privacy

No account, no cookies, no analytics. Answers you type stay in your browser and are gone when you leave the page. Videos load from YouTube (youtube-nocookie.com) only when you press play.