Later, after graduating from work, I didn't have time to go to offline classes at all, so I began to understand online institutions and listened to an open class for free. I think the teacher's lecture is very interesting and humorous, and at the same time, it also explains the knowledge of dry goods very thoroughly, so I took the vip course.
I have been studying for more than two months now, and I feel that online courses are very suitable for students and working parties. I go to work during the day and come back at night to review the lessons recorded and broadcast the day before yesterday, and then listen to the live class. Feeling down, the whole person is full and learning progress is fast. Now there are no problems with some basic operations.