Professional traders who take trading as their job are busy with other things outside of trading

What books did you guys read when you created your own trading system?

How do you view the theory that review is useless?

How can one be called a qualified trader?

What are the common operating modes of thousands of trading studios, and how do they support themselves?

I partnered with a friend to do asset management for a year, and then it all collapsed. Is there any colleague to share with you? I also want to try again, before I try, I would like to ask everyone's suggestions and experiences

What is your basis for entering the market?