I had this professor in college who assigned Frankenstein, so I thought I'd read it for the third time because maybe that time Frankenstein's whining wouldn't kill me. The professor was kind of an abomination in a lot of ways, but not the worst professor ever. Anyway, I'll never forget going to class for the lecture on the book. The professor was lecturing in this caught-you-with-your-hand-in-the-cookie-jar voice and said, "Frankenstein's monster was a vewy, vewy baaaaad monster!" So, that's what I knew from college about the structure and influence of the novel. Everything else I learned on goodreads.
Mary Shelley is the Elizabeth Gilbert of the 19th century. Yes, horrifying, but for the right reasons? And don't try to tell me those Shelley and Gilbert weren't writing horror. That's just silly.