Here is another Jim Simons story on his biography as a trader. This seems really popular on this website. I find it high-quality reading.
The one summary of all this to remember this general quote:
Math and computer science may be the most important tools for any trader to master based on his results.
Preserve your wealth by watching this https://quantlabs.net/banking/
NOTE I now post my TRADING ALERTS into my personal FACEBOOK ACCOUNT and TWITTER. Don't worry as I don't post stupid cat videos or what I eat!