Hi Annette,
I have the first book, the second book and the tool. I have to say I have been tying turksheads for ages and I learned more from Bruce Grant's great book " Encyclopedia of Rawhide and Leather Braiding". It's not that the cook books aren't good, but I think you need a basic understanding of how the knots form up. The tool makes it easy to see where the parts and bights are, but taking the knot off the tool and forming it around whatever you are covering is a frig. Also, if you are making a knot around something that isn't open, like a steering wheel as opposed to a whip handle, the tool is not the tool and you have to revert to either Grant or Ashley ( Ashley Book of Knots). All that being said, the Cookbooks are great for trying new knots. But go through Grant first...
Ponylady