Short, practical material on the mechanics that actually decide whether an account survives.
Why the size of a trade matters more than the direction, and how to fix a size before you enter.
What win rate hides, why return on volume beats return on equity, and which numbers can be gamed.
How margin is calculated, when a position gets closed out, and what that costs.
The arithmetic of drawdown: why a 50% loss needs a 100% gain to recover.
Market, limit, stop and trailing stop — and the situations each one is wrong for.
Why five positions can be one position, and how to spot it before it costs you.