Done many courses mate it makes no difference. The only thing to do is start breaking engines and finding out what its all about.

Set up a bench stand and engine and destroy it then do it over and over again untill you stop destroying it. When you done that well, you are about 5% complete to be able to call yourself a tuner and to be able to map. Been doing it for 3 years now and still wouldnt want to let customers cars go without having them checked by a Pro...

Regards