Thanks! I'd love to learn how to do a bunch of stuff on my bike so this is very helpful. Especially since I need to tune my bike this year :)
Bakari - Any recommendations for learning how to do things? Video links? Books?
Personally, my own method has always been to take stuff apart, look at it, put it back together.
I did get a library book on bike repairs in high school, and had a subscription to Bicycling Magazine for a few years which occasionally had tips, but it was mainly just doing it, getting it wrong, doing it again, getting it slightly better, and so on until I could do it well on a first try.
But that method isn't for everyone.
Park tool has a pretty decent book, and (though the site is down at the moment) I believe a good portion of the content is also on their website:
http://www.parktool.com/(The late) Sheldon Brown has an incredibly thorough site, on practically every topic related to bike repair, including lots of old, obscure, esoteric stuff that you are very unlikely to own, but if you do you won't find the info on it anywhere else (the site also includes plenty of info for modern bikes). We use it for reference in our shops regularly, even the professionally trained and credentialed mechanics.
I'm sure there are lots and lots and lots of other good books and videos and websites, I just don't personally know them, because I don't really need to use them. But I bet other people will chime in with their own favorites (hint hint)