When I first listened to it, I wasn't that familiar with TypeScript, so I only watched the beginning briefly before turning it off. But after using it to some extent and coming back, the problems are being solved and it feels like I'm making progress. In 06-array-indexing.ts, it seems you intended the type to be RedAndGreen, but the name is set as RedAndBlue, so it needs to be corrected. Also, due to server issues, the exercise links and other materials won't open. The part about being able to practice using Expect feels fresh and good, and I think it's great to be able to cover advanced TypeScript topics since I know there aren't many resources that deal with them. I've watched it all once, but I think I need to watch it again when I have time later to internalize it more. The code examples seem really good, but I feel like I'm not fully grasping them yet due to my own shortcomings. For items that navigate to separate sites, it might be good to update them with stackblitz links in the lecture list.