IT training is still useful. However, it also depends on the teaching staff, course content, learning atmosphere and post-employment arrangements of training institutions. Every training institution is still different, and this still needs to be measured.

Of course, self-study can also be learned. But self-study requires not only strong learning ability, but also strong consciousness. Of course, you also need to have a set of courses suitable for learning from 0, and try to choose the one that suits you.