This hat begins with a cable cast on, a method that I was unfamiliar with. The book has an easy to understand tutorial in the glossary, and it was the only resource I needed. It took me about 8 stitches to really get the hang of it, but I had no problems after that.. Here's a link if you'd like to give it a try.
The benefit was that I didn't have to guess how much tail I would need for a long-tail cast on. As an added bonus, the finished edge has a nice neat look.
I can say with absolute certainty that I do not like knitting through the back loop as part of a main pattern. Sure, here and there, no big deal. I really had to pay attention to the pattern. This was not an easily memorized pattern. You can't watch the a new episode of Downton Abbey and knit this. You should have back ground t.v. that you don't have to actively attend to, for me that would be Doctor Who episodes that I've seen many, many, many times.
Finally, I picked up a rhythm of the pattern after about 20 rounds.
I think the finished hat is gorgeous and worth the time and effort. However, I most likely won't make another because of the silly knitting through the back loop. Well, I would have to really, really like you to make you one.
The Lettuce color reminds me of Kermit the Frog (in a good way). It isn't easy being green.