I loved this book, and it is actually one of the first "how to" books I've read in a long time where I sat and read it cover to cover in just a few days.
"A Complete Guide" covers the origins of faeries, who they are, evidence, literature and legend, and the different types of faery. Ms. Eason gives many exercises and rituals throughout the book that help the reader to more deeply connect to the world of the faery. And I personally appreciate that she focuses more on the fact that the faery experience will affect the reader more through their psyche and that it's okay if one doesn't actually "physically" see the faery folk. Their effects are still felt and still working through the consciousness.
This is an excellent book for both the beginning and more advanced student, and I would highly recommend it to anyone interested in finding out more about the realm of the faery.