If in doubt: - use your favorite search engine to look for whatever with site:sheldonbrown.com tag (for me it explains 90% of questions) - same with site:bikeforums.net tag (be prepared to spend a lot of time here. For me it has always explained the other 10%). Especially the "bike mechanics" section.
20 Oct 2008 by CPK
When it comes to biking and bikes, I found sheldon brown's site very
useful.
http://www.sheldonbrown.com
it has everything from biking ethics for beginners (some of them with
videos too) to complex do it yourself for experts