The W.i.t.c.h. Guidebooks are a series of books with no story content. There are three of these books, published by Hyperion in the USA in 2004 and 2005.
List of Books
The guidebooks, unlike most W.i.t.c.h. media, do not include stories but includes characters thoughts on that book's topic, diary extracts from the girls' diaries, scripts of conversation between the girls, "agony aunt" style columns run by the girls, general advice on that book's topic, and quizzes.