Not entirely sure yet Peter, I would be venturing into unknown territory.
The tutorial I have downloaded uses the P-40 as the base for the walkthrough, so it would make sense to follow that first. My own preference for a first try would be the Westland Lysander, although Master Ranwers did post a WIP of that in the school some considerable time ago. Maybe the Persian two seat Hurricane, I guess that could be done without actually building an entire aircraft. Oh my, I guess I could go on forwever, the Avro Anson or any other of the twin trainer transports, single engined trainers such as the Miles Master, bombers like the Hampden, maybe things like the jet Provost series, the personal wish list is endless, finding the time, ability and enthusiasm would be a major obstacle though. It would certainly be a major effort just to get through the tutorial, never mind actually getting the thing in any sim such as our beloved one.
I have now more or less completed the stationary planes mod for 4.11.1 so I will now hopefully take some time to go through the tutorial I have purchased, whether I actually have the ability to get through it and create a 3D model is another thing entirely.
Wishing you all the very best, Pete.