However, the digital format requires a different reading strategy than a physical book. Here is how to master it.

: Success here depends on knowing theorems by heart. Practice identifying which theorem applies to complex multi-step diagrams.

Foundational drills. How to understand: These are typically formula-based direct questions. When reading the PDF, highlight the formulas used here. If you cannot solve a problem in Zone A, you have a conceptual gap. Do not proceed to Zone B.