Luckyman, you have to be patient and do a thorough troubleshooting, eventually you will get the car running
Since you can crank the engine, then I would next check for fuel, can you hear the fuel pump running? If so, then you check fuel pressure and flow, for this you don't need any fancy tools, not sure if where you live the auto part stores have tools that you can borrow or rent (for the fuel pressure tester, for the fuel flow you need an empty container and a watch.
Note: All cars are supposed to have a safety switch that cuts power to the fuel pump when you get involved on an accident, but don't know how the Porsches address this issue (someone that knows please share your comments)
After confirming that you have fuel then you check for spark, I am sure that you know this but by a process of elimination you will find the cause, good luck!