1, buy books or attend short-term training for electricians. Most importantly, you must learn the basic knowledge first to facilitate the advanced knowledge in the next semester. Of course, to do this kind of work, you have to take the qualification certificate and electrician grade certificate. If you don't have any certificate, basically no unit dares to hire you, and the higher the grade certificate, the better. Junior and intermediate senior technicians, senior technicians and special technicians are basically useless. These are the basics. Even if you don't have any certificates, ordinary units won't hire such a low-level electrician.

If you are proficient in electrician, it is necessary to do research. The so-called employment certificate and general technical school graduation certificate are only intermediate. You'll have to take the exam for further study yourself in the future. If you are working, you'd better study hard with an electrician.

3. Fundamentals of Electrician, Primary Maintenance Electrician and Common Sense of Electrician published by Mechanical Press. These three books are very good introductory books. Very detailed!