I'm glad I took this course. The instructor is very knowledgeable. I like his teaching style, i.e., straight to the point. I learned some valuable information that I could not find on other ruby/ruby on rails courses. Since I'm not a native speaker, it usually took me quite a while to understand the description of the homework assignments. Once I understood them, it didn't take me that long to solve them. I would like to say thank you to Prof. Kalman Hazins for teaching this class and sharing his valuable knowledge. I highly recommend this course. However, if you are an absolute beginner, this course might be a little bit too hard.