Guitar (additional effect, speaker), bass (distortion effect, it doesn't matter without bass effect, speaker), drum (drum), good quality microphone (usually provided by the lead singer), and some bands also use keyboards (similar to the saying "electronic organ"). If there is a keyboard, the genre may have more choices and can perform more songs.

Then the band members will gather the lead singer, guitarist, drummer and so on.

Next, we should train vocal music and dance. At first, you can cover some famous songs and gradually accumulate popularity.

And then tour in public.

Everyone has accumulated enough, and the band has accumulated some experience.

Write your own songs slowly and find your own style.