thats too bad, i would still visit the pro shop. they should at least let you pull a couple back. the web link butch mentioned is pretty detailed that should help alot. but you can only get so much from reading about whats for you. you really need to go hold a few different bows in your hands. and i would suggest not to be turned off by any name thats on the bow. with technology these days every bow is descent, its just finding a style that fits you

good luck, hope to see your first bow kill