Today is the priority day for graduate student. I just finished my registration of Summer and Fall. There are few available capacity left, hehe, I think I don't need to worry about it any more.
It has almost pasted half of this semester by now. Some courses I got knowledge, but some I could not learn well. I think the reasons depend on different extent of difficulty for different courses. The more important thing is I already know how to use my energy and time efficiently to distribute to different classes. This is very helpful for me in the future when I have to take five classes next semester.