Keith Schwartz Stanford Compiler course CS143 http://www.keithschwarz.com/cs143/
Stanford's Engineering Compiler course on Lagunita https://lagunita.stanford.edu/courses/Engineering/Compilers/...
Matt Might's courses are self educational blueprints http://matt.might.net/teaching/compilers/
Book Introduction to Compilers and Language Design https://www3.nd.edu/~dthain/compilerbook/
I'm not a fan of uncurated link dumps, however: Awesome compilers link aggregation on Github https://github.com/aalhour/awesome-compilers
https://inf.ethz.ch/personal/wirth/CompilerConstruction/inde...
https://ucsd-cse131-s18.github.io https://course.ccs.neu.edu/cs4410/lec_let-and-stack_notes.ht... https://ucsd-progsys.github.io/131-web/lectures/05-cobra.htm...
(I designed the original version, though it's improved a lot in the past few years)