I bought this after seeing Suzen at a bead fair. The book is OK and covers a range of knots but there are a few down sides.
You seem to need a heck of a lot of cord to make anything of any gravitas in the way of knots. Anyone buying the book thinking cord is cheap in relation to chain had better think again. Also, a lot of the knots are small and lack impact.
Having said that the instructions are quite easy to follow and you get what it says on the tin. I'm just not 'grabbed' by the whole thing in the way I thought I might be.