You can send for up to 3 kits, you read the books and then swap them for others to read.

"RaW Swaps is a fun and easy way to get books you want to read for FREE! All you have to do is pick up a book or a magazine you've finished reading, and then try to swap it with someone else."


http://www.bbc.co.uk/raw/getinvolved/rawswaps/

ooh sounds interesting. I'll check it out thanks