If you really don't know what you're doing, then go to an archery shop and get your bow there. It may be a little more initial investment, but they can do a lot more for you than any catalog. I've been bowhunting for about 16 years and always buy my bows from a shop. If there are any problems you run into the shop should be able to fix you up or deal with the manufacturer. After you've learned a little bit about how things work you'll know what to order and what not to order from catalogs. Most shops are also a good place to learn from experienced shooters also, kinda like going to a trap or skeet range.