Quite, a great book. You should also get Living Goddesses, a beautiful posthumous work that updates that book and makes it easier to digest, adding the research on the various Ur-European proto-faiths.
It is sad that Gimbutas is so discarded. Some people are just happy to dump her theories only after some New Age tosser decided to adopt her as the Goddess creator. It is NOT the simplistic view that she believed in and her work consists of so much more than just that.