Most, if not everyone, knows that the “Spaces” feature became available with Mac OS X Leopard. It is the Mac equivalent of Linux’s “Workspaces”. To switch spaces press + the direction of the space you want to move to (ctrl + arrow key).
Will look like this (in System Preferences):
The first option means that if you warp to the space on the right, your cursor will jump to the left side (because, conceptually, your cursor warped with your screen). Second option means your spaces are stringed together in an infinite loop – if you go the right many times, you’ll eventually end up where you started. Those two options take some getting used to.