I used 100 Days of SwiftUI to get comfortable with developing for iOS. I've been building things on computers for a long time, but his videos were able to keep me engaged by striking a good balance between explaining the fundamentals of Swift and the more advanced aspects of iOS development. That course is a tremendous amount of work to give away for free and I had no problem subscribing to Hacking with Swift+ for a few months to support his efforts.

Matt Haliski