Yep, the next step in the judicial system would be to appeal the judges ruling(s). This of course means your case gets taken to the next level of the judicial system (for instance: say you just went through the municipal <city/town> courts, next would be county courts).
You mentioned you're 17 yrs old so I want to point something out for you so you won't be disappointed. Appeals cost ALOT money, time, and stress. By the time you start going through the proper procedures, you will start to realize that you have spent more than the amount for the tickets, more than 6 months of time fighting the system, and more anger and headache getting pissed off trying to learn everything and handle the process properly. And also remember that the judical system is a VERY FORMAL environment. R