Ultron Encyclopedia started as a course of "Building One and Building Two". In fact, the cultivation of builders is relatively mature. Although there are no original questions in the exam, there are indeed some knowledge points and similar types of questions that teachers usually talk about. The most important thing is to have a course that I can understand at a small white level. On the whole, I think it's ok, because I think no matter where you apply, it's impossible not to learn. If you can't learn by yourself, don't waste that money. Some people can teach themselves without signing up for classes, so success or failure depends on the individual.
Of course, there are too many educational institutions, so I don't know what other institutions are like, because I don't understand them either. If you really want to apply, you must believe in your decision. Personally, I suggest that you can go on a field trip or attend classes in official website, because the teachers in each institution are different, and the style and rhythm of the teacher's lectures will affect your learning effect. Others say it's better to feel it yourself.