The Magivian's Nephew was a very good book.
It is the first book in the Narnia series.
It talks about how Narnia fisrt came to be and I must say a very good source of information if you read The Lion,The Witch, and the Wordrobe first before this.
It answers a lot of questions about Narnia that you may had.
I know it gave me a lot of info my family was bombarding me with!