I like, how the first project is structured: Yesterday, there was a little introduction with all the basics and today was implementation day. The task was to build a little form and do a pretty simple calculation.
Most of the time, SwiftUI makes total sense to me, although I'm still getting used to it. I also like, that you can see the result immediately in the preview pane. Feels like Xcode/Swift Playgrounds on steroids. What I really dislike are the error messages. Let's hope, that they will be improved after this year's WWDC.