Switchboard in PowerPoint?

[E.Q.]

I've only dabbled in Power Point, but I have a project that needs to go a bit
beyond the basics. I'd like to develop a training program. I have a couple
PP presentations prepared by others and I'd like to create more. I'd like to
organize these into a larger application having a "driver" or "Switchoboard"
type of presentation (either a VBA user form or a PP slide) so that the users
can in effect pick a topic and see the associated presentation. The project
would actually end up with several levels. For example, the first page would
have selections for general topics (I. Collection System, II. Lab, III.
Primary Treatment,...) and the selected topic would lead to subtopic (...,II
A. BOD, II B. TSS, II C. Phosphorus, ...). I imagine the associated slide
show with then launch at that level. (Though some topics would have more
levels).
Is there a standard way to deal with this type of hierarchial interactive
powerpoint application?
The end users have limited computer skills. I'd like to make sure they
simply use mouse clicks on buttons or icons in the display. (In other words,
I want to make sure the application launches into the slide show and ideally
returns them to the switchboard when complete... or perhaps have an option to
return to the switchboard at any time.)
I'm guessing this is a common application and someone knows of a good link
that will walk me through. But any comments will be appreciated.

 

[Troy @ TLC Creative]

You can seemlessly jump from one presentation to another using links. Here
are two tutorials put together by PPT MVP, Taj that should give you lots of
ideas:
http://www.awesomebackgrounds.com/powerpointmenu.htm
http://www.awesomebackgrounds.com/powerpointlinking.htm