From Jodie:

The greatest asset of our knitting machine is the ease with which an unusual, personalized gift can be produced. A hat or cap with a signature or a special slogan really conveys a very special "thinking just of you" that is hard to top. This book of patterns is published to compile some different methods to knit in your unique designs.

The patterns all have step-by step instructions. Some also have diagrams to help explain the positioning of the letters, etc. Several variations are printed of some items to enable you to use the same pattern and knit an entirely different look.