[jpolitz]

Various flavors of a course based on "An Incremental Approach to Compiler Construction" [1] have most or all materials free online, some with excellent notes. Taught at UCSD, Northeastern, Swarthmore College:

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)

[1] http://scheme2006.cs.uchicago.edu/11-ghuloum.pdf