menu expansion, terms within vocabulary... etc.

I'm having difficulty getting taxonomy module to work in my up-to-date Unix Drupal using Taxonomy Menu 6.x-1.x-dev. I don't see secondary items appearing on menus. That is..
1) I installed the module
2) I defined a vocabulary for Videos: general, org behavior, communications. Under some of these categories there are secondary terms.. personality, etc.
3) On the Taxonomy Menu Settings, I asked to show "Video category" in menu. (I have no idea what it means when it says that the "Module Page:category - How should the first items on the menu?" (I think that may suggest that results will be supported by terms of the vocabulary?)
4) I've asked at settings to display number of nodes per term and to display descendants, but I do not know where to go to observer these results.
4) Using Zen Classic as a theme, I do get "Videos" appearing as a menu item, though I don't find subsidiary entries although in developing the menu I indicated I want this expanded and enabled on the navigation menu item settings. When I view the page which is linked, I see the Videos ordered by terem, though with no indication of the number of nodes

Any tips would be much appreciated. Thanks so very much for all that you do.