If you're new to bike repair, you may be interested in some of the specialty tools used in shops. This video reviews a few of the most common specialty tools, and a little bit about how they work.
Spoke Wrenches: http://amzn.to/1M8xsNA Cable Cutters: http://amzn.to/1OhWU2j Casette Tool: http://amzn.to/1OhWXes Pedal Wrench: http://amzn.to/1I6NOod Cheap Pedal Wrench: http://amzn.to/1JleJJq Truing Stand: http://amzn.to/1OhX4Xm Whip: http://amzn.to/1MdKFWh Cup Remover: http://amzn.to/1OhXhtD Crank Puller: http://amzn.to/1O9xdAh Third Hand: http://amzn.to/1e3AQeC Cup Press: http://amzn.to/1fNywtU Pipe Cutter: http://amzn.to/1OhXv3O Bike Repair Stand: http://amzn.to/1TFLRCZ