Hi Fred, the link below is to an instructional article that I wrote back in 2010 for my members, giving them some insight on how the TPReviews module works. Hopefully you may find it to be a little useful, but please note that it is old and out of date, so many of the links are broken because I closed many of the pages that are linked.
The basic concept was an article system that is somewhat like the TP Articles system, but more tightly focused on groups of articles/reviews of things like movies, books, games or anything else that the forum admins and members wanted it to be about. One big part of the system was an index page(s) listing all the reviews, first in categories and then listing the articles/reviews within the category.
The admins would setup some categories and then the membership could post and interact with reviews in that category(s). Welcome our Reviews Module!
Hope this helps, I'll try to answer any questions you might have.