# How to Actually Use YouTube for Step 1

> Five free YouTube resources for Step 1 — Mehlman, Randy Neil, Dirty Medicine, the antimicrobials video — and how the Vault maps them to First Aid pages.

URL: https://vault-guides.vercel.app/youtube.html
Canonical: https://vault-guides.vercel.app/youtube.html

## Summary

A guide to using YouTube for Step 1 without rabbit-holing, built around five free resources. Mehlman Medical for how the examiner thinks (watch the videos, not just the PDFs); Randy Neil for every system rather than only biostats, worked through via a high-yield PDF that breaks down his full library; Dirty Medicine for building foundation when a concept won't click; a single 90-minute video covering all of antimicrobials; and USMLE Vault, which attaches the single best hand-picked YouTube video to every First Aid page and topic. Also notes the University's Files section holds the Randy Neil PDF and a Divine Intervention podcast PDF.

## Key facts

- Author finished Step 1 in 14 weeks using YouTube heavily
- Five resources: Mehlman Medical, Randy Neil, Dirty Medicine, the antimicrobials video, and USMLE Vault
- Mehlman rule: watch the videos, not just the PDFs
- A high-yield PDF breaks down Randy Neil's full video library system by system
- Running the Randy Neil videos before an NBME or exam raised scores by at least 5–10%
- Randy Neil covers cardiovascular, CNS, psychiatry, ethics, biostats and biochemistry
- Dirty Medicine is for foundation early on; Mehlman and Randy Neil are for revision
- One video covers all of antimicrobials in 90 minutes
- The Vault attaches a hand-picked best video (often 2–3 minutes) to each First Aid page
- University Files also contains a Divine Intervention podcast PDF of the most important Step 1 episodes
- First 3 days free

## Covers

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## Source

USMLE Vault — https://usmlevault.com
Author: Dr. Marish Asudani

Updated: 2026-08-26