The 3Blue1Brown channel has some stunning visualizations of basic math concepts, the videos are a must watch for any math enthusiast. 3Blue1Brown Channel
Taylor's Latex Commands
I'm a lazy s.o.b. when it comes to writing LaTeX, so I made a file to make the blackboard-bold and script fonts easier. Anyone may use them by downloading the file and putting the line
before the "begin document" line. td_fonts.tex
This site could not have been made at all without copious help from ...