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Here are the most popular resources that people use for the USMLE Step 2 CK on Cram Fighter. These aren't necessarily the best study resources, but they should be a good starting point.

Rank Title (all editions) % of students used
1. UWorld 71.8
2. OnlineMedEd 47.1
3. Anki 32.2
4. First Aid for the USMLE Step 2 CK Clinical Knowledge 18.7
5. Master the Boards USMLE Step 2 CK 18.1
6. AMBOSS 13.0
7. Step-Up to Medicine 8.6
8. SketchyPharm 7.9
9. SketchyIM 5.9
10. USMLE Step 2 Secrets 5.3
11. SketchyMicro 5.3
12. Dr. Pestana's Surgery Notes 4.8
13. Kaplan Qbank 4.0
14. Step-Up to USMLE Step 2 3.7
15. Toronto Notes 3.3
16. USMLE Step 2 CK Lecture Notes: Internal Medicine 3.3
17. Kaplan High Yield Lectures 3.3
18. USMLE Step 2 CK Lecture Notes: Pediatrics 3.3
19. First Aid for the Psychiatry Clerkship 2.6
20. USMLE Step 2 CK Lecture Notes: Obstetrics and Gynecology 2.6

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