MidSouth from Rogersville, MO on 1/31/2013 12:54:49 PM:
Although deals can be had on CraigsList, do yourself and your knees a favor and visit a local bike shop or REI first to get an idea what size bike you need. After you buy your bike from the shop or from CL make sure you have bike set up for you at a shop. When you start looking for a bike I would suggest what most makers call a hybrid or fitness bike, such as the Trek FX line of bikes. Get yourself a helmet that fits and is comfortable, a couple water bottles, a spare tube, the tools, and knowledge to change a flat and you are set to go. We like to use a rear rack and bag to keep lunch, rain jacket, extra water and snacks handy. We also use a handlebar bag to use for camera, sunscreen, bug spray, wallet, keys, etc.