For now the categories are not working, but the search is. However, the search is case sensitive and all Nave's topic are in uppercase. So to locate a specific topic, start typing in the search form in ALL CAPS, and a list of pages matching your search will appear.
As of this time we only have topics that start with the letter "A" uploaded. We are trying to make as many programmatic correctiosn as possible before turning it over to manual editing.
---Thank you for you patience.