The new Express Videos are short and align with specific facts in First Aid. The Table of Contents to the left of the video matches the one in First Aid for the USMLE Step 1, so you can study fact to fact with the book. Click on the Fact name you want to review, and jump right to that Fact to watch the corresponding short video. Just think how much study time this will save you!
You can also use the horizontal slider bar in the video toolbox to move ahead or backward within the video once it loads.