I've gone through a few courses. The Histories, Philosophy, and particularly Astronomy are very good. Maybe I'm not cut out for them but I'm finding the Physi

I've gone through a few courses. The Histories, Philosophy, and particularly Astronomy are very good. Maybe I'm not cut out for them but I'm finding the Physics and Chemistry courses far less approachable. I'm having to go back in the video over and over to understand a concept. I think they'd be great if I already understood the concepts and wanted to review, though.