Maintenance tips - links, tools

I currently do basic maintenance on my road bike, like cleaning the drive train and changing cables. I wanted to get into overhauling bottom brackets, hubs, headsets, freewheels, and pedals. Can knowledgable folks recommend some links to maintenance info and necessary tools? I will be giving it a go on Ultegra (2006) and Record (2007). Also, I was curious how often the insides of the parts listed above need overhaul. Any advice/suggestions are appreciated.

Thanks

Books:
Zinn and the art of road bike maintenance, park tools blue book
web sites: Park tools web site, also sheldon brown

If price is an issue for you, check out the Bicycling Guide to Complete Bicycle Maintenance & Repair for Road & Mountain Bikes. $20 - $25 at most major book stores or you can go to rodalestore.com.

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Shimano Cycling official Shimano see the tech support
The official Campagnolo web site - Bicycle Parts and Components Cycling official Campy see tech info
Welcome to Park Tool Company see repair help
http://www.bikewebsite.com/ general info
Sheldon Brown-Bicycle Technical Information advice from the great one!
Sheldon Brown's Links to Bicylists, Localities, Organizations, Services lots of links but don't know how many still work

Have Fun

BTW, a bit late, but thanks for all of these replies.