Just seeing your question reminds me of my previous experience in people's livelihood. I have been there before, so I came here.
In fact, there is no process, just get the information ready.
Especially the physical examination, try not to delay. Once you officially sign the contract beyond the 25th, even if you worked there for nothing, you won't get paid that month.
The specific process depends on which region you are in and which position you are engaged in. Some areas need fixed training for a few days, and some learn directly from old employees. I haven't received any fixed training before, so I learn directly from the old employees, relying more on my own observation and learning.
Then there was orthodox training. On your first day in the company, you should have a week's training, sign a contract, and then officially start working.
In fact, there are not many complicated processes.
If the general process is: go through the entry formalities-training-examination-formal work.
The exam is super easy, don't worry. It's nothing difficult, except that some books don't have anything that will make people entangled.
If the real core is that you must be mentally prepared before going to work, and then stick to it, if you really like this job.
Many people may think that the work of the card center is not easy to do, but it depends on the target. In fact, making money is the second, and learning is the real wealth. You will have a deeper understanding and experience from it. Good luck, man.