I'm in the 11th grade and have little education of college level mathematics. I individually find myself studying one section of it but hardly have a grasp. I really want to read the Feynman Lectures to further my education of physics, but as I read over the pdf it looks like there is a lot of mathematics that I don't understand. Is there anything I can read or videos that I can watch to make the Feynman Lectures understandable? If not, are there any books that you recommend to a beginner? As of right now I am reading In Search of Schrodinger's Cat, and so far it makes sense/I already know it.