Hi, I just saw that you are living in Austin so I thought I could help a little. First off, craigslist has a ton of really good deals. So many people in Austin bike that are very rich and they get new bikes every season so you can find a lot of stuff there. Also, there is a shop called Ozone Bike on Guadalupe, they have a lot of really nice people their that are non-intimidating that will help you. Every time I go they are really friendly and never pressure me to buy anything. There is also a new place on Barton Springs and Lamar that is small and local. The Bicycle Sport Shop is a bit more intimidating but you can get your spandex there

Also, if you are interested in volunteering the yellow bike project is a really great way to get to know people in the community and help out a bit. Bike across boarders is another organization with lots of good people.