ok so to give some context I'm currently in hs and mathematics has always interested me but in my early years of childhood (doing out of school prep bc of parents) I just slacked off and did the bare minimum. In my accelerated classes, I always pass w A- w out much effort (due to constant curves & ec points) but I genuinely want to lock in and learn something beyond. I have this huge drive the past year for improving myself and one goal I set for myself is having an incredible grasp of mathematics. Im not some genius so I know this will be tough. But for anyone who was once like me.. how did you guys become so good at math?? Khan academy, YouTube, CC classes, any specific books? I want to start learning all the courses like calc, multivariable calc, diff eq, linear algebra etc first by building a clear roadmap. Literally just for fun. BTW ik that for learning advanced mathematics I need to build on my foundation (start from precalc) but Im looking for advice/methods where the knowledge I get will be cemented in my head, and ill be able to retain it STRONGLY, like at any point in my life, without having to google like quick rules to do problems