Rob, most people don't mind if someone just hangs out for a bit to see if they like the way things work. Most will even let you begin playing without knowing the rules, and will help you to learn the basics. Then, if you decide it's something you like i would suggest for you to get a players handbook. I think you can sign up on meetup.com to find out and get notices for the monthly D&D meetup. You can also contact me with any questions and I'll do what I can to answer them.