I like this book. For the price, 38p, you can't really go wrong. The measurements are american, which is a draw back. However, it isn't too difficult to find a conversion table. There are plenty around on the internet.
I recent bought a slow cooker, but wasn't really sure what sorts of things I could cook in it. Well, I may not be following the recipes from this book word to word, but I've gotten some really good ideas out of it.
Over all, for the price, I would recommend it for those who have a bit of time and are feeling creative. If you're not up to finding out conversions, then I think this may be a bit of a waste of time for you. Especially if you're in a rush.