Our technical writer just finished the first Ontolica video tutorial, explaining the process of installing Ontolica for MOSS 2007 and creating a new Ontolica search center. We will soon post more tutorials here.
Our technical writer, Karl Maybach, also wrote an excellent administrators guide for Ontolica. It is included in the Ontolica download. He is a freelance writer and the best one you could ever hire. You basically just have to show him your product once and vaguely explain what it does - and he will quickly crank out some excellent manuals teaching you stuff about your own product that you never even realized yourself.