One more question, how rough is the systems course for the type ride on the Saab?

I took 3 min and looked at the Air Cond. systems, I understood the overall, one path gets hot air, one gets cold air and you blend, but how detailed does that go down to each component of that system using Air Cond. as an example?

Just curious, if I sign on I want to pass, I love systems, but we don't know what we don't know and I am trying to find out how big is big.

Really appreciate it.

thanks