First, select a brokerage. When you interview, everyone will say you're a great fit for the company, etc., as you are a revenue source. Make a list of questions to ask each brokerage and make sure they're right for you.
Although I've never signed up for it, I've heard good things about the Brian Buffini training. That being said, hold off for now. You will constantly be pitched to buy programs that will claim to make you a successful Realtor. You and your efforts will make you successful; not a program.
Host open house whenever you can. It's a cheap and effective way to meet people.
Prior to open house, preview other properties for sale in the neighborhood or at least look up recent previous sales.
Know the tax rate, any assessments, HOA amount, if any and the school information. If the school is award winning, Blue Ribbon or Distinguished, know that.
If someone asks you a question and you don't know the answer, tell them you'll find out. Never guess. You'll lose credibility.
No matter what, always act honorably and do what is in your client's best interest. Oddly, you may lose a transaction now and again by doing the right thing, but you'll benefit in the long run, as will the clients who stick with you.