piznal, a fixed gear bike is a very specific bike favoured by bike couriers and urban hipsters. You can't coast - the pedals are always moving just like on tricycle. If already you knew that, fine, but if not, don't buy that unless you are looking for a very different kind of experience.

You should measure your inseam and from that you can get an approximate idea of the size of bike you need. That one is a 58 cm which probably fits someone around 5'11" to 6'2" but that is just a guess. A misfitting bike is a waste of money.

You may want to get a bike that accomodates fenders and a rack if you plan to lug books and use it year round. If you buy a used bike, be prepared to spend at least $100 extra on tune up, repairs and accessories, but you'll still usually spend much less than on a comparable new bike.

Here's an earlier post on measuring your inseam. http://www.bikeforums.net/showpost.p...8&postcount=14

Some sellers also advertise standover height (ie. can you stand straddling the bike in front of the seat without crushing your genitals). The standover height of the bike should be about 1"-2" less than your inseam measured wearing the shoes you will ride in. That also gives a crude idea on whether a starter bike will fit. However when you are buying the next bike after this one, you can go into more detail and precision on fitting.