I built a side project that turns YouTube videos into study notes — here's what I learned shipping solo

I'm a game developer. I ship games at a studio for my day job. I thought that would make building a solo web app easier. It didn't. Not even close. This is the story of building and launching Lynote — a tool that turns any YouTube video into structured study notes — and everything I wish I'd known before I started. The problem I watch a lot of YouTube to learn. Tutorials, conference talks, university lectures, technical deep-dives. I always felt productive while watching. Then I'd go to actually