So, I'm in high school, and I'm looking to learn some more math for fun. I've learned all of Calc 1 and 2, but after that, there are much fewer online resources (that I like), and for advanced subjects I prefer a physical textbook. I'll have to be teaching myself straight from whatever textbooks I get, so any suggestions? Also, will I have any gaps in my knowledge by learning in the order listed in the title? Thanks in advance