Thanks for the advice. MikeMover. Im a little bit more worried now.
So, I will have to buy the tool and the manual. The manual should show me where to connect the vacuum tester, I suppose.
Having never worked with vacuum systems on any other car I have ever had, I am facing a steep learning curve.

My brakes work great so far. The door locks and environmental controls are the only signs that I have impending problems.
I suppose that I have no choice but to get the tester and the manual, or are there other tests and fixes that I can perform in the interim?