I am a high school senior who is planning to major in math in college. I am currently in a break until the second semester of calculus at a local college starts at the end of January. I took the first half as an AP class at my school last year. I have been going back and reviewing topics from before calculus and the calculus that I have already learned to make sure that I am ready for this semester. I know that proofs are very important to math, but I feel like the topic has really been neglected in former classes. I would really like to read through some really interesting ones that I would be able to follow with my background. Any suggestions? Also, any advise in general on things I should do now to prepare for for my future math education/career?