This tutorial will introduce you to some of the more common user interface controls of OS X — the foundation upon which most Mac apps are built. You'll learn about these controls, as well as the methods and properties you'll need to understand in order to get up and running as a developer!
This is a companion discussion topic for the original entry at https://www.raywenderlich.com/2782-core-controls-in-mac-os-x-part-1-2