don't get a 2nd hand bike until you know what you're doing. as in clothing, fit is the most important thing. try to find a good shop that you can imagine yourself spending some time in, and where you get along with the staff and mechanics. they will fit you for a bike, and answer other questions regarding sizing, materials, clothing (you will need to buy shoes, helmet and some decent outfits), and gear.these days you can get a very nice, light road bike for € 1000.
11/11/11 at 6:09am