It doesn't matter how much you don't know. Your ability to learn and work hard and clean is key. Go to a community college and ask them if they have a manufacturer's training plan. Some dealers will sponsor you and pay for the training as well as starting you at the shop with a senior / mentor tech. You could also contact Porsche North America directly for some pointers. Even if the college doesn't have a pro plan go anyway to relearn all the stuff you think you know (like the difference between exhaust gas velocity and pressure
). The teachers there probably know every service manager in the city and get calls all the time for apprentice trainee recommendations. The advice about Craftsman vs SnapOn is spot on. Work for a couple of years before you start a $25K credit line with SnapOn. Best of luck. And pretend your child is riding or driving the car you're now working on....