<p>Hi all, what are the best discrete math textbooks for self-studying? I am currently a junior in high school and want to learn and explore mathematics beyond the calculus taught at my school.</p>
<p>AoPS has a good series of textbooks such as “Introduction to Number Theory,” “Introduction to Counting/Combinatorics” etc. which might be interesting (although some of the problems are at the MATHCOUNTS level). I believe there are Intermediate versions of those textbooks, although I never used them.</p>
<p>If I were you I would look at number theory, and possibly some point set topology. Look at Dover books on math, they have basics and are usually cheap</p>