I wanted to try another shot at trading, where should I start?

I wanted to venture into trading. Not as a form of investment, but as a job. Which resources should I start reading? What market should I begin with?

5 years ago, as a fresh grad, I tried trading in forex. I didn't know reddit yet, so I read materials available on the internet. This is what I previously wanted as a profession. But I was too immature and aggressive. I had no plan and used intuition alone. As a result, I lost most of my college savings. I subsequently quit. But the ghost of that dream is still haunting me. Haha. I still enjoy discussing about the market. In fact, it was the reason that I got my undergrad degree.

I hope you can give me guidance. Thank you.