Are you looking to learn iOS Development with Swift or you have already started? Looking to learn different iOS SDK’s and Modules while working on some mini projects?
www.hackingwithswift.com is great place to start with. It has around 40 mini projects that involves many different concepts and modules of iOS development. And the best thing is all of them are up to date for iOS 11 and Swift 4.
I myself started my iOS journey with it and still refers many different modules/concepts from it whenever required.
You can give it a try. All the best.