Price action
Price action means reading raw candles and structure without cluttering the chart. The core tools: support/resistance, trendlines, candlestick patterns (pin bars, engulfing), and breakout/pullback behavior.
A classic setup: price breaks resistance, pulls back to retest it as new support, then continues up — you enter on the retest with a stop below it. Clean, rule-based, and the foundation of every other school.