I have ordered the Castle one, not received yet, so is an at risk deal I suupose.
Other sites seem to rate the books very well though, and it's more expensive elsewhere.
It's a book plus lego plus figures, with the instructions for making various castle / pirate based models.
"Become a LEGO Brick Master. If your child loves LEGO bricks, they'll enjoy this book complete with 140 fantastic LEGO bricks and two mini-figures. Watch as they find out all about building with the LEGO bricks provided, then use the bricks again and again to build 15 amazing castle models. This title is perfect LEGO kit promising hours of playtime for your child."
ISBN: 9781405341394 (Castle)
ISBN: 9781405341387 (Pirate)