Jim,
On the front of this site is the link to a lot of information about buying one.
If you didn't want to use some of that information asking the following on this forum would have roused the troops:
"I am contemplating buying a bus, what should I look for?"
If a question like that from a potential buyer was posted you would have been buried in advice. The only job you would have would be to separate the BS from good advice. (Not that there is ever any BS on this forum.) That question is about as far from being a technical one as you can possibly get.
One thing is for certain, you would have been advised to check tire dates, battery dates, have Detroit and Allison pull the codes and you would have asked for a review of the maintenance records.
I cannot tell you how many times I have seen sellers suck in the unaware by showing them the tread depth on their 6 year old tires (covered with tire dressing) and explaining how they can get another 100,000 miles from the tires. Go to some of the sites on the internet and see how many buses are advertised with the tread depth listed, but not any date codes.
I think we have even suggested here that before money changes hands buyers either live in the coach or spend a lot of time operating every switch dial and control to make sure everything works. Doing stuff like that goes a long way to sorting out fact from fiction. Nothing technical there.
My point is we all, me included were overwhelmed when we first decided to buy the coach. Knowing I was in way over my head I prevailed upon the expert, Don Hoffman to do the inspection. He did not have a dog in the fight. He didn't care if I bought the coach or not. All he did was operate everything and evaluate everything, methodically, and with attention to detail. I didn't do anything technical. I watched. When it was all over he told me he could not find anything that did not work or that needed any attention.
A new buyer, not confident of their skills can probably do an inspection, but it is far better to get a third party to do it. The only exception is if the purchase is from an established converter who will stand behind the coach. In that case I would not drive away until I lived in the coach, found how to work everything, got the defects repaired, and went through some training.
While on the topic of training, when I bought my first one it was Harvery Mitchell who told me originally the coach was a good one and to buy it rather than look at the coaches he had at his dealership. Then he offered to do the training for me, and he was good to his word. He provided four days of hookup at his facility and every day he had his people visit us and teach the systems and how everything worked. He showed us what kind of a first class guy he was and is. My point being even someone with no clue can access resources so there are no surprises.