Start with Core Categories
Pick five to eight categories you constantly meet: people, tasks, decisions, risks, data, time, and learning. For each, sketch a no‑frills symbol: a circle with two dots for a person, a checkbox for task, a diamond for decision, a triangle for risk. Keep the stroke uniform. Place examples in a margin legend and reference them while taking notes. Small repetition makes them automatic, and soon they will appear before you even consciously decide to draw.