Can you quote a couple of the lines that are confusing? Usually the patterns give the instructions for one sock and then you repeat the row on the second.
I don’t have the book and so can’t see the pattern. You need to give more info, please. It sounds like you are at the point of turning the heel turn and if you are it should tell you that. You can give us a few lines from the pattern, just not too much to avoid copyright issues.
Someone else may have the book and be able to see the pattern.