I found a free basic bike maintenance class on meetup.com that Global Bikes was offering on March 19. Dustin, the service manager at the Gilbert location, led the class. He did an excellent job showing us what tools we need and how to use them. In the class, I learned how to change a tire, check the inner tube for holes, and clean and lube my chain. Without this class, I would have never realized what I can do to maintain my bike and get the best performance out of it. Dustin answered all of our questions with confidence. I will definitely be back to Global Bikes!