Propack has to be installed on top of Poser4, or it does nothing. Books are available for both Poser4 & ProPak; go to a site like Amazon.com & do a search on "poser" you'll see them. For poser, a better source is the tuorials here & on other Poser sites (Tutorials link at top of this page, Poser sites are easily found by clicking any of the top 15 web site links at the bottom of the margin on this page, & clicking thru the links pages most sites have. Most Tuts are Poser4. Harder to find Propak Tuts, Might be better to buy the book there. (about $50.00 list). A good source for info on how ProPak can enhance Poser is Curious Labs. They wrote the program & own the code for Poser4.