@Christy Glenn It's important to talk to the different offices, and find out what they offer in the way of training, and advertising. You will want to know what the commission split is, and where the different breaks are to move up in commission.
Pay attention to the local market, and which office has the most listings, and does the most advertising. Be sure to ask how advertising and marketing is handled, do you do your own and pay for it, or do they do it and take it from commissions, or is it a co op arrangement? Do they design the flyers for you, or do you do your own, etc. (here in so cal they have big marketing depts in the offices, not the same in smaller towns) Signs?
Floor time, will you get floor time, and how often? (that's very important for a new agent, as it helps you get leads for buyers and sellers.
Open Houses - Do new agents get a chance to hold open houses? Does the office represent any subdivisions?
Be sure to go in person to the offices, as it's important to get a feel for the office, their professionalism, and how they do business. You want to feel comfortable and know you can work with the other agents.
Have fun!