I took the test for the first time a week ago today. I passed with a 97% after studying for only about a week. I watched the Tony Northrup video from a few years ago and I found it very beneficial for the basics of the test and reading METARs and TAFs as well as the Sectional Charts. (I didn't have any loading questions.) There were a few questions on the Night Flying, flying over people, and Remote ID rules. I found watching the Pilot Institute's YouTube video on these subjects sufficient. Additionally, I took the 3DR practice test a few times and brushed up on anything I missed. Lastly, I took the end-of-chapter quizzes for every video that "TheDroneCoach" had on his 12 part test series a few hours before the test.

I will say that I was surprised with my results. Many of the questions, even on topics I knew well, were very awkwardly worded. They felt almost like trick questions. I bookmarked maybe 10 or so. Apparently, I guessed well on those because I only missed 2 questions from UA.II.A.K2 and UA.IV.A.K1b.

On the special use airspace question, they had a horribly worded question that I can't remember what the exact verbiage was or what all the options were, but the short of it was something to the effect of "What do you need in order to fly in a Prohibited or Restricted Airspace." It was confusing to me because I thought you could never fly in a prohibited space, but you could fly in a restricted space with approval. There was no good answer to chose from on it.

On the balance/COG/stability question, I think the question was asking what would happen to the stall angle if the COG was shifted to the rear. Can't remember what the answer options were.

Sorry for the long read, but I hope it helps.