Hope this is in the right place. I'm 13 years old and I would like to self-study physics. I've study most of calculus and some differential equations and linear algebra. But due to my eagerness and perhaps lack of guidance I have many gaps in my foundations. As I have little access to books, please provide me with websites to review sub-calculus topics such as trig and geometry and to continue studying more advanced topics. I have also studied elementary secondary school physics topics such as Newton's Laws of Motion and the Conservation of Momentum etc. Again, please provide me with websites to review these concepts and learn more advanced topics such as Maxwell's equations and Quantum Mechanics. Thanks. Edit: Also, I would appreciate it if you could provide a list of topic to study.