I am not very impressed with either Guitar for Dummies, nor am I impressed with Music Theory for Dummies. When several online lesson site say that "this is the way" and you say your way is the way, That's confusing, I believe the many sites as opposed to your one way. Several mistakes, and when you give an example in one way, but do not show that example when something changes, that too is confusing. I knew a little about guitar before I got your books, and you leave much to be desired. Sorry, but that's my opinion.
Thank you for reaching out, Robert--I'm sorry for any confusion our book has created for you. There seem to be 8 videos for chapter 2, do these not cover all of the mentioned strumming patterns?
Tom with Wiley