Passed US History 1 with a 65!
In my case, I needed a 60 to pass. I strongly reccomend the jocz videos others mention (1-22). I also highly reccomend taking practice exams. I suck at studying so I just spammed those. I did freeclepprep, the 2 posted in this forum, the college board official one, and the REA (which you can easily pirate). The exam was much more straight forward than those exams, like many mention.
Here's some things I was surprised by in the exam: -There were no "EXCEPT" or "which of the following is NOT" kind of questions -only 1 question about art, 1 question about a writer -lots of questions about the Mexican American war
- barely questions about particular notable characters, about who they were and what they wrote etc.
If you prepare properly with just taking practice exams and looking back to seeing what you got wrong via the answer keys, you'll easily get a 50.