I'm very in to physics at a layperson's level, but I find I am not going get anywhere without the math and physics theory to back it up. I took physics, calculus and functions in high school, but that was a looooong time ago. I'm thinking that, in order to advance my knowledge in physics, I'm going to have to "go back to school". I think I need to brush up on the fundamentals of calculus and the fundamentals of physics (eg. SAVTU equations). Can anyone recommend some good online resources where I can relearn this stuff? I will look through the PF tutorials, but I think I need a little more than that. I should probably do exercises, etc. I guess I'm thinking of actual online courses but I'm open to suggestions.