At present, the industry is not very standardized, and where to train has become a headache. However, it is not difficult to select a few points: 1. The certificate should be used all over the country and can be found on the national website. 2. The charges are clear and reasonable, without hidden charges and pressure. 3. The training institutions are formal, and the brands are big companies, so that you can learn the real skills with peace of mind and take orders to your home. Aiyuebao is good, the content is super practical, exclusive and forward-looking. One-time expenses include all the expenses of certificates and teaching materials, excluding any other expenses.