The best source for accurate information on paleontology related topics is the primary literature, where original research is published. After you get a basic feel for the terminology, it becomes possible to learn by immersion by reading articles and trying to piece together what the authors are saying. A big problem, however, is access. Finding a copy of a journal can be difficult, and making copies can really add up. Subscriptions are usually obscenely expensive because most of these journals have pretty low circulation. So how do you get a hold of technical papers?