https://web.stanford.edu/class/archive/cs/cs143/cs143.1112/
https://www.cs.umd.edu/~mvz/cmsc430-s07/ https://ocw.mit.edu/courses/mathematics/18-404j-theory-of-computation-fall-2020/index.htm
http://www.cis.upenn.edu/~cis511/cis511-notes-17s.html
Info here http://infolab.stanford.edu/~ullman/pub/gradserv.html
Services
Tutorials
http://dobegin.com/regex-parser-matcher-generator/ https://lowlevelbits.org/how-to-learn-compilers-llvm-edition/