I also read the Cocoa Big Nerd Ranch guide, and wish they'd do another. Alot of those concepts are not entirely gone, and can still be put to use. If you alread

I also read the Cocoa Big Nerd Ranch guide, and wish they'd do another. Alot of those concepts are not entirely gone, and can still be put to use. If you already know a bit of Obj-C and AppKit, then I'd recommend hackingwithswift.com. He has a great number of tutorial series on Swift, SwiftUI, and iOS and Mac programming. He also has a paid mini course I believe. Other than that, it's a pretty guerilla effort, but it is fun