Does anyone currently or have past experience with autodidactic study? It can be either for actual school or just self gowth. I finished my university studies over 15 years ago with a BS in Pharmacy but my passion is physics. I am trying to relearn math I have been taught ages ago (trigonometry and calculus) as well as getting the basics of vectors and linear algebra, which I never studied. I am using two very clear and concise books on the fundamentals of Classical Mechanics and Quantum Mechanics, a calculus workbook, and online tutorials from Khan Academy and Stanford University. I go at my own pace as this is just a labor of love, but am interested in anyone's personal experiences in learning this way (doesn't have to be physics) and any pointers on how you were able to overcome any challenges that arose.
Also any good reference material on the subjects mentioned and how you went about asking an expert questions when really stumped would be wonderful. My interests in physics are Cosmology and Quantum Mechanics mostly and I know I am biting off a lot more than I can chew, but just reading books and watching videos by the populizers of physics is not enough for me anymore, I want to know the math and logic formally.
Thanks in advance for any thoughts on the ideas.