To many people, a Book of Shadows implies a particular religious orientation, but nothing can be further from the truth.
A Book of Shadows can be used in any path.
A Book of Shadows is a simply a refrence work full of ideas and thoughts, much like a diary.
Write and keep your own book.
The term Book of Shadows tends to conjure up large, leather-bound tomes, but any blank book will do.
What Goes in It?
A Book of Shadows is personal book, and it is completely up to you what goes in.
Let brothers and Sisters copy what they will, but never let this book out of your hands.