1: https://ctan.org/tex-archive/support/latexmk
2: http://nitens.org/taraborelli/TeXOpenType
3: https://tex.stackexchange.com/questions/1319/showcase-of-bea...
I'll blame two of my colleagues for indirectly 'inspiring' me to spend more time than justified, tinkering with LaTex and TikZ (it lets you produce "vector graphics from a geometric/algebraic description"). I'm not happy with the amount of time I spend with LaTex+TikZ, but I find the results to be satisfying and very convincing. Have to diligently chip away at it to get more productive with them.
After my college days using LaTeX, support for ligatures arrived in browsers and I would spot those (fi, ff, ij, ft, and perhaps others) and post them on Facebook.