I recommend the course, for anyone who understands some math and science. The quizzes and writing exercises were challenging in different ways, and helped me to develop my skills in computing, understanding, looking at data, and practice sharing in the enterprise of science.
I would give my performance maybe a B since I did very well in some areas (I understood the science very well, and mainly aced the quizzes) but not so well in others (in the writing assignments I kept getting into trouble with the deadlines and the interface, and in grading other people's papers sometimes I wasn't very thoughtful in my judgments and statements.)
Also, I said I understood the science very well, but also I know I could have looked more thoroughly at some parts of the science. Especially about the analysis of radiation as it interacts with the atmosphere, I think I went too fast, and relied on looking at a graph to get myself through the lesson. I am sure the graph has a solid foundation, but I would like to review that part of the course or look at that information more deeply.
There is a term project at the end that took me by surprise and I procrastinated on it - bad habit.
I decided to go ahead and purchase the course since I am willing to support the course. My finances are really not good but considering the amount of time I put into the course, I should be able to afford that much.