Linux/unix environment learning books

Im not sure if i must create this post here or on the linux section but anyway :P.I start use linux about 3 days ago and i'm really interested to read some books to understand more and better about the linux/unix environment.Does anyone have any recommendation about a book to buy and read?

(FYI I dont like to read e-books i prefer to have the real book im my hands :)

here is a good one