If you ever need a good place to fix your bike by yourself, and you don't want a bike shop to do it, you can go to these great bicycle co-ops.

Bikerowave http://www.bikerowave.org/
Bicycle Kitchen http://www.bicyclekitchen.com/who.html
Bike oven http://bikeoven.com/

For a hourly rate you can use a bike stand, all their tools and all their cleaning supplies. You can also buy used parts for cheap when you need them. The volunteer staff at these places are always helpful for when you don't know how to do something.