Back to School at My Age? Why Not?

This isn't my first "older student" experience, but it's definitely been the most confusing and frustrating.
I'm currently enrolled in an English class taken entirely online. It's not the first online class I've taken, but I didn't expect it to be as confusing or as challenging as it is. I thought I had experience from taking several courses in various subjects like Theology online. That was pretty daunting in itself. When I came across a quote by  C.S.Lewis, (see inset) I was thinking, "Let's do this!" and forged ahead.
But technology just keeps changing, or I just keep aging or both and I've been battling to conquer this challenge to my brain cells. I'm determined to get through this!
The upside is that as a qualifying "Senior Citizen" taking the class through the English department of one of my alma maters, I get a tuition reduction. A three credit hour course (or non-credit as I am taking it with that added status) is over a thousand dollars! That discount as a Senior Citizen helped, but it's still pricey (around $225.) That's just the tuition. I'm old enough to remember when full-time students taking twelve credit hours paid about $165 in tuition costs (It was the early 1970s and I was attending the same university where I'm taking a course now.)
Then there are the book costs!
Again, while it's another cost, I learned years ago as a grad student in English in the early 1990s there are ways around the cost university bookstores make the students pay. English related books can be obtained from various sources, discounted bookstores, for example, or even your local library. I wasn't as lucky in obtaining my second grad degree in another field. Those texts weren't available at your area bookstore. It was before textbooks and certain big bookstores made a pact to sell the texts. Additionally, the new option is renting your text from the university's bookstore.
While I'm taking the course entirely online from a university about thirty miles away, I don't have to worry about parking as I did in the past. Another two points for "online learning." Changes have occurred to the physical layout of the campus I last hiked across for classes in the 1990s as an older student (though not the Senior Citizen status.) and I had more energy then. So I'm glad I don't have to compete with students parking and trudge across campus. At least not yet.
Reading posted comments made by my younger classmates about their readings of class material is interesting in the perspectives they share, as well as seeing their skills in navigating what sometimes seems a labyrinth of technology I have yet to conquer completely.
Now, pardon me while I go back to reading and research for the class.