A challenge I am taking up this year:
Pagan Culture's Witchy Books Reading Challenge
Details on their page pagan-culture.blogspot.com
All you have to do is ready witchy books (no hard ship there right?).
First of all add the Witchy Challenge button to your blog page.
Write a post on the Pagan Culture blog page to say you are taking up the challenge and include a link to your announcement.
At the bottom of the post add all the witchy books you read in 2012.