The other reviews are basically correct, this is a good, broad overview and will get you up and running quickly. Beware, however, that the examples are poorly edited: for example, the namespaces used the text, the illustrations, and the source code are frequently different. This isn't too big a deal if you have some background w/RDF concepts in general and know how to debug these inconsistencies, but if you're truly a noob, you may run into some trouble.