I'm really enjoying the visual format of the book, especially for learning something like SwiftUI. I love seeing the view and the code that creates that result with added notes to help you navigate around pitfalls. Pitfalls which probably took Mark hours to solve.
It's easy to jump in and hop around as a reference guide but can also be enjoyed front to back as I'm doing now. I'll definitely be referring back to this during my SwiftUI development.