I know this question is lame, but how do I do screen shots and where do they go? I'm used to the shift command 3/4 but I'm not sure if its working because I can't find the screen shots.
Either use Grab or yes, shift command 4 for part of the screen, or chift command 3 for all of it. Shift comamnd 3/4 will save it as a pdf on your desktop.
Shift+Cmnd+3 should snap a pic and place it on your desktop. Perhaps you just aren't seeing them? OS X often requires you to bring Finder to the front to see items added to the desktop. This can be done by simply clicking anywhere on the desktop. Are you hearing a camera sound?
...But you can make it easier to take a screenshot by going in system prefrences, clicking on keyboard & mouse, keyboard shortcuts and then setting the different screen capture elements to the F buttons!
Example:
on my mac
F1=capture screen to file
F2=capture screen to clipboard
F3=capture selection to file
F4=capture selection to clipboard
Not really something thats required but hey its kinda cool and makes there actually be a reason for the F buttons beyond exposé...