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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 78.0
2. OnlineMedEd | Clinical 42.4
3. Anki 33.0
4. First Aid for the USMLE Step 2 CK Clinical Knowledge 21.3
5. AMBOSS 15.1
6. Master the Boards USMLE Step 2 CK 14.0
7. Step-Up to Medicine 6.9
8. USMLE Step 2 Secrets 6.0
9. SketchyIM 5.5
10. SketchyPharm 5.5
11. SketchyMicro 4.7
12. Step-Up to USMLE Step 2 4.4
13. SketchyPeds 4.0
14. SketchySurgery 3.8
15. Dr. Pestana's Surgery Notes 2.9
16. USMLE Step 2 CK Lecture Notes: Internal Medicine 2.4
17. USMLE Step 2 CK Lecture Notes: Pediatrics 2.4
18. First Aid for the Psychiatry Clerkship 2.2
19. COMQUEST 2.2
20. Boards and Beyond 2.2

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