For related (but subtly different) advice, read How to view all open apps on a Mac as well as our tutorial on using Full Screen mode. See all windows shortcut on a Mac ...

It is common, though, want or need to use a different program to open a particular type of file. This tutorial will explain how to open a file using a different program than the default one.

I wrote last year about Tinkerstellar, a new iPad app inspired by Apple’s Swift Playground that’s designed to help people learn Python through multiple interactive lessons. Tinkerstellar is ...