I notice allot of people these days claim the title of Wiccan. The impression that I get is that they read one book and then think that this makes them a Wiccan. So here is my version of a book list that I expect anyone who claims the name Wiccan to have read before they announce to the world "I am Wiccan!" regardless of if they are solitary eclectic or a more traditional Wiccan path. As a Veteran to the craft, if I am in a conversation with a person who claims to know anything about Wicca, I automatically assume they have read the following:
Scott Cunningham's Guide to the Solitary Practitioner- If you follow my blog you know I am not that much of a fan of Cunningham.. however in this day and age every pagan has read this book. If you read this book and find yourself moved by its pages, Wicca is probably not for you.. However even if you like the book or not it is essential to understanding the ideals of Solitary Eclectics.
Raymond Buckland's Big Blue "Complete Book of Witchcraft"- its basic and covers many topics, this used to be a standard newbie book in the day, and now I get the impression that many pagans have no idea what this book is. It is a surface scratch for Wicca.
The Ferrar's Witches Bible- This covers a good chunk of info such as Sabbats and tools and all that good stuff..if you haven't read it and are calling yourself Wiccan.. you might as well be a rocket scientist who has never taken a calculus class.
Margret Adler's Drawing Down the Moon- This was once must read book for pagans back before Barnes and Noble had a New Age section... so yes you should read it.
Any Book by Gerald Gardner- because no matter what you believe, you can not do a ritual or study any form of Neo-Paganism without coming into contact with something Gardner did for the craft.. Yes the books are very boring.. and can take you almost a year of reading while on the toilet..but if you can actually get through one of these books you will be that much closer to understanding at least part of the history of American Wicca.
At least 10 other books- it doesn't matter what they are but paganism in general is about life long learning, and if you are going to claim to be on this type of path, as a fellow pagan, I expect you to honor the idea of being on a path to wisdom.