I want to be an electrician by myself, and I want to work in property and hotels in the future! What knowledge and ability do you need?

Electricians in property and hotels are nothing. As long as you can connect lighting and sockets, you can certainly generate electricity better. Just change the light bulb at ordinary times. When changing the light bulb, we must pay attention to it, and the decorative lights should be handled with care. Light bulbs need to look at the voltage, because there is a kind of lamp that is 24V. After working in a hotel for one year, I suggest you work as an electrician in a factory, because that's the real electrician technology.