Wanna know how everything is changing with SwiftUI? Overwhelmed by everything announced? Paul has clearly worked his butt off to get this great guide on all things SwiftUI. If you have a question, he's probably answered it here.
Personally, I like using storyboards. I work by myself and don't have to worry about all the source control issues teams have. That said, I'm very intrigued to use SwiftUI. It's a bit of a bummer it doesn't support previous iOS versions.
Besides the guide, here's his main post about SwiftUI.
Quick Start Guides for SwiftUI by Paul Hudson