John Heckman has recently gathered together some links to site with tips on how to use Microsoft Word more effectively. These include a link to 221 MS Word Keyboard Shortcuts. I cannot stress how advantageous using keyboard shortcuts can be for you. Not only does it allow you to increase your typing speed (because your fingers do not leave the keyboard), but it also keeps you from using the mouse (most people do not have an ergonomically friendly mouse).
The comments also contain a link to CompuSavvy’s Word & WordPerfect Tips, which contains a variety of tips to help with problems in both Word and WordPerfect.
The important thing to remember is that if you are having problems with Word, don’t bash your head against the desk. Chances are that there is someone who has encountered the same problem that you have and has posted a solution to that problem. Checking sites such as these as well as doing a little google research will often allow your to ferret out the answer to your problem.