I watched all of Prof. Mucklow’s videos on FRA and just finished Prof. White’s videos on CF –they both explain the material (and shortcuts) fairly well. I have not seen the rest of the video series, but there are samples on youtube. Good luck!
I’m not sure how true is this, but back in my day I heard that Allen Resources were recruiting CFA candidates to write material for their previous level. Which obviously makes quality highly questionable!