Today I began the coursework on a college-level class in songwriting. The class comes from the famous Berklee School of Music, and is offered for free through Coursera. The only expense is the book, which I got from the Kindle store for less than $10, and the songs that we need to listen to for the class (and I already own several of them).
I have to watch video lectures, complete quizzes, and submit assignments for peer review. I also have to review the work of five other students. The class goes for six weeks, with about six to eight hours of work for each week's lessons.
It's a little scary; not only has it been several decades since I took any classes, but I've never taken any college classes. But I have little to lose and a lot to gain, so I'm diving in.