ENC1102 online was not a hard course. There are a decent amount of discussion posts. For assignments, there's also peer reviews, super easy quizzes, and essays. No exams. Conducting the science experiment was a bit annoying. It's the workload you'd expect for a 6k writing class, but there isn't anything "difficult" you have to learn. Just make sure you have time to do the essays. I didn't think grading was harsh. As for the textbook, I just found an older version of it for free online and used it when needed.