What should I look for during TM inspection?

Two more days and I go pick up my new (to me) TM!!  . It is a 2 2001 2720. I am so exited!! The dealer has promised a thorough inspection and a three hour "course" on how it all works. Being absolutely new to RVs I am a little nervous I won't ask the right questions. I would appreciate any advice!  
- What should I ask?
- What should I check for?
Thank you, you are all so nice.