Ever wonder how to regulate your watch? Its not that hard, but it is advisable to have a certified watchmaker do it for you, however if you dont want the expense or want to learn it yourself.. this short video is a good place to look:
http://youtube.com/watch?v=13FpX2Ylo9E

Doesn’t give you the whole picture, but teaches you a bit of terminology and part names. Check out some links on the internet for even more info on doing this. Timezone has a neat article on it here:

http://www.timezone.com/library/archives/archives631703035854316706