Great site as mentioned by wrk101 http://www.parktool.com/repair/index.asp

If you're interested in repairing bikes and maintaining your own I suggest picking up Zinn's bike repair guide as well. I love that thing and I find it a little easier to have it right next to you when working.

www.cyclespeugeot.com is one of my main resources of info when it comes to Peugeots.