Hi Matt,
I am going through the process of becoming a Realtor right now. I too was afraid at first because I heard one investor say "never become a realtor, there are all sorts of disclosure and liability issues." I don't remember what state he was in but in my state (Which is pretty stringent) all that I am required to do is disclose to the buyer (if I am buying it myself) that I am a realtor.
There are lots of advantages. You have access to MLS, you can run comps on any property, you can also go look at properties anytime you want. (Subject to the MLS instructions) without the worry of synchronizing your watch with a realtor. And you eluded to the other benefit. You get a built in Mentor.
@Kevin Delaney is correct YOU pick THEM. I talked with 2 brokers locally so far. One keeps calling me to find out how I am doing. Keep in mind that the broker gets a cut of everything you sell. It would be pretty self defeating for them to steal your deals. I would say interview a 2 or 3 brokers and find out where you fit in. Then go for it!