Compared with schools, training courses
First, you can learn a skill systematically, comprehensively and pertinently in the training class.
Second, the teaching of training courses is very different from that of schools. After all, there is a subjective willingness to learn and the money has been paid.
Third, the learning atmosphere of the training class is different. There may be people fooling around at school, but this rarely happens in training classes.
Compared with self-study, training courses
First, it is relatively easy to learn to have a teacher to take you and teach you. Take fewer detours.
Second, there is supervision. There will be certain results in a certain period of time.
Third, there are students in the training class who can learn from each other and make up for each other's shortcomings.