Mr. Argulles gives a concise and easy-to-understand analysis of the Mayan Calendar, and then proceeds to leap into unique and interestingly odd interpretations of this calendar and what it means for humanity (based on his interpretation). Although I question his New Age terminology, the ideas as presented are certainly worth having a look at if you're interested in this subject and have a tolerance for the mathematical complexity that this calendar can present. Argulles has apparently amassed quite a little following by charging people for "further information," but this book really is all one needs to understand his bizarre interpretations of Mayan spirituality. Nonetheless, it is a strangely good read.
