They have a seperate site for flight training info.
http://flighttraining.aopa.org/Click on the 6 free issues for the Flight training magazine link.
The flight you did was called a discovery flight. The next time you talk to your instructor he should be briefing you on what to expect for the next few flights, and presenting you with a lesson plan of some type.
Something you should do in the mean time is get your medical out of the way. Here's a searchlist of Medical Examiners.
http://www.aopa.org/members/databases/medical/If you only plan on flying for fun, tell them you want a Student Pilot certificate with a third class medical. If you plan on making any money down the road, go ahead and get a first class medical to see if you meet the more stringent requirements. The key thing to mention, though, is the Student Pilot cert.
The reason for getting the medical done asap is in the rare case of your having something that would disqualify you, you wont end up wasting a lot of money on flight training. If you do end up having a medical issue, ask them or your instructor about a "SODA"
