Mythology: Timeless Tales of Gods and Heroes

A great primer for anyone interested in mythology. The author tells you where they plucked the myths from, and where you can potentially continue your research. Another interesting aspect of this book is the author, in certain myths, combines aspects from various tellings to give their definitive version of each myth.
A great overview of a wide array of myths. If you're interested in learning about mythology. I would say that this would be a great place to start.