First Aid for the USMLE Step 1 2023, 33rd Edition

First Aid for the USMLE Step 1 2023 (33rd Edition) by Tao Le and colleagues is a high-yield review book for USMLE Step 1 exam preparation.
It covers all major subjects—biochemistry, pathology, pharmacology, and organ systems—using concise notes, mnemonics, and clinical images.
Designed for medical students, it serves as a comprehensive, student-to-student guide emphasizing exam-focused content and efficient revision strategies.