Clothing CAD is a special software for clothing structure design, but the use of this software must be mainly manual printing, or you can go to Baidu clothing CAD encyclopedia, where the introduction should be more comprehensive.
As for whether it is necessary to learn, it depends on your understanding of the concept of fashion design. If you think that fashion design is just a style drawing, there is no need to learn it. However, only drawing style drawings is not a professional fashion design. Clothing structure design is the bridge of the whole clothing design, and clothing design does not want to draw style drawings, because clothing is very practical, and style drawings can only be a general concept, which is not practical. It is necessary to rely on the structure as the intermediate bridge, and finally a finished product can be realized through clothing technology.
Whether Shaoxing has such a training school depends on your local labor department. This kind of clothing school is managed and certified by the Labor Bureau.
At the same time, as the basic accumulation and study of the core of clothing design (clothing structure design, also known as clothing pattern), Gao Hong wrote two books, Clothing Structure Design and its Application and Clothing Factory Pattern Complete Collection, which are more practical and worth reading, and are of practical help to the formal study and future work. They are all 139 yuan. You can learn more about these two books on Baidu Encyclopedia.