As I've said before, shortcuts in programs will save you a ton of time. You're never going to memorize EVERY shortcut. Well, perhaps if you have a lot of time, but you get my idea here. If you find you are repetitively performing a task, find the hotkey for it!
Here's a list of Microsoft Word (hotkeys):
http://support.microsoft.com/default.aspx?scid=kb;en-us;290938
If you ever lose this link, Microsoft has some similar things in their in-program help.
