Read the Reminiscences of a Stock Operator before talking to me. My twits are my and my dog (RIP Nov. 2015) opinions, not advice. I am often wrong and I love it. PS: I DO NOT short single stocks and I do not answer 3x ETFs questions.
Interested in trading systems since 1996... in early to mid 2016, I completely stopped trading individual stocks barring a few small trades in long term accounts. After much research & backtesting, I now trade a SPY option spread system. Good luck!