I was going to just buy the book, but I thought I'd be more motivated to do the work if I took the course. Once I realized the classroom timeframe wouldn't work I went online. Man, such a waste. At least if I'm sitting in a classroom I have potential shame motivating me to study. I'm still toting the flashcards around in my workbag unopened. :(

And thanks for the vote of confidence. :)
You're never too old for grad school. I think the hardest thing at a certain point is finding relevant references.