Getting used to Mac and Gimp

This semester I'm trying a few new things; these include learning a non-windows operating system, Apple, and the open source digital photo manipulation program, Gimp. For the latest assignment, I jumped head first into both, as I was eager to start using my new iMac, and that I am currently unable to locate a usable version of Photoshop for Macintosh. Minor frustrations aside, Gimp was able to substitute Photoshop's tools and abilities for what the assignment called for. The biggest annoyance I found was all the clicking you have to do in order to select a tool and use it; once I memorized the shortcut keys though it was smooth sailing. On an interesting note, Gimp uses the actual "Ctrl" key the same way you would on a Windows system instead of Mac's "Command" key that every other program seems to use. For example: Photoshop on a Mac would have "Command+X" for cut but Gimp keeps it "Ctrl+X".