Man, what a comprehensive resource for learning Swift/SwiftUI all for free with relevant and challenging assignments, real community feedback and well designed recursive learning loops. Paul Hudson is THE GOAT.
Would not have launched my app without the incredible help of hacking with swift. Not only have it helped me a lot over the years but it also helped my intern to get up to speed with developing in Swift in just a couple of months. He was studying Java development at the moment.
A constant resource, Hacking with Swift was the perfect companion for learning about Swift and Apple app development. The information was easy to follow and the forum integration helps with the more niche errors/issues.
