I took the course last year, but I'm just writing a review now. As a non-major, I didn't know what to do at first, but Allen's lecture taught me everything from 1 to 10. He taught me everything from understanding the basic concepts to what to do after finishing this course. And I think Alan's grammar lecture is the best. The basics are the most important, and he explains the basics in great detail. That's why it feels like a guide for non-majors. I still have a lot of studying to do, but I think I got off to a good start by taking Allen's lecture. If you're wondering whether to take this course or not, I definitely recommend it.