The document provides advice on preparing for the pharmaceutical chemistry portion of the GPAT exam in 3 phases: Phase 1 focuses on learning chemical classifications, Phase 2 on drawing structures, and Phase 3 on revising concepts from notes and modules. Key topics covered include SAR, isomerism, named reactions, qualitative tests, SN1/SN2/E1/E2 mechanisms, electrolytes, theories, hydrocarbons, and aromaticity. The author recommends a simple approach of classification, structures, and revision to crack the GPAT pharmaceutical chemistry section.