It doesn't matter if you don't have an electrician foundation.
It is recommended to look at the motor and electrical control first. It's best to find an internship in a factory and find an old electrician to take with you in combination with daily work. It takes about 3-4 months to integrate theory with practice.
I found a Japanese PLC material of Mitsubishi and Omron, and found that Japanese is the most suitable for getting started, or learning Siemens S7-200 material.
It depends on what kind of products your company uses.
Learning at this stage is rather painful, and you may encounter many problems.
At this time, you can take part in a PLC training class in the society and learn with questions. The effect is good.
After completing the introduction, find some engineering cases, read more and think more!
Pay attention to learning step by step, don't worry, take your time, and adhere to the combination of theoretical study and factory practice.
Stick to it for about a year, and you will get something.
Finally, I emphasize that if you want to study deeply, you must adhere to the combination of theoretical study and factory practice. It is useless to study behind closed doors.