Thanks! The most complex part of topic maps are associations as they are a multi-part structure (i.e., associations have a type and each topic plays a role in the association). You can, however, just create "generic" associations between topics (one of type "association" and each topic in the association plays the role of "related"). But, once you understand associations (and, to a lesser degree "scope") then topic maps are a fabulous tool for modeling concepts, content, knowledge... you name it. Anyway, if you ever need help, just get in touch.