I'm a huge twilight saga fan and.....
I recently read a book called 'the twilight saga the official illustrated guide'. This is a really good book for any Twilight fan, or anyone who wants to know more about the background of the characters main and minor. Also this book tells you about the background of places such as the Cullen's house, another subject it covers is vampire laws and the cars.
If you're team Jacob you will still want to read this book because there is a whole section on the tribe.
My favourite part is the history on Jane and Alec, and Alice's past.
I really think that you should read this book!!!!