lol, yeah, the screenshot keyboard shortcut is crazy (3 fingers). It took me a while to get the muscle memory down, but once I did I liked the flexibility of it way more than Windows (at least at the time which just had print screen, while Apple could do the whole screen, a selection, or a window).
I suppose these days spotlight can open the screenshot utility, although I never think to do that since I've got it down. It's worth going in there at least once, as you can change some settings, like not showing that little thumbnail, automatically saving to the clipboard instead of a file... stuff like that, depending on your needs.
I had the benefit of using OS X since version 10.2, so each year when stuff came out I could just learn those things. If I was starting now it would take me forever to find all the random little stuff and where various settings are hidden away. I don't even know where I'd go to try and learn it all. I'd probably be frustrated as well.
