The article was brief and had some good advice, and it sets the issue straight of having priority of school over other activities. School is a full-time job and spending 40 hours/week should be expected. A lot of the advice are also just common sense.

I also strongly recommend Cal Newport's book "How to Become a Straight-A Student" (https://www.amazon.com/How-Become-Straight-Student-Unconvent...). I've read a lot of books on studying in college, but I think this one really is one of the best way to study.