Trading courses and coaches are useless- true or not

How to choose between opening a position through a breakthrough and opening a position with a pullback in trading?

Ask for advice on how to manage trading positions in order to achieve long-term stable profits?

How do you view the theory that review is useless?

How to distinguish between "noise" and "signal" in the trading field, and extract truly valuable information?

The financial market is flooded with a lot of information all the time, how can we extract something of real value from this information?

Why are there so few stable profitable Huiyou? There are many liquidated and repeated losses? Is it really because of technical analysis?