Semi-permanent study, first of all, you should choose a regular school to study, because this study is guaranteed.

Secondly, it depends on the teacher's skills. You can see the teacher's practice. If the teacher's skills can't conquer you, there is no need to study in this school.

Then ask about the price, content, cost and time of study. It should be that the content taught in each school is different, and the time and cost of study are different. You can't learn anything without learning content. Generally, the best time and time for learning semi-permanent content is about 7 days, and the price is about 6 K- 1 10,000. Finally, it depends on whether the school can learn for free, because semi-permanent technology updates quickly and can only learn new technologies from time to time.