Avoid unless you're doing research on the topi

Insanely abstruse and convoluted. Reads like something written to deliberately confuse readers. Not to mention you have to flip the book nonstop for formulas/figures dozens of pages earlier.(It doesn't even have a pdf version!!!) Coupled with a prof who talks and writes BS, you're doomed. I for one was just totally fucked up. Unmitigated disaster. Though didn't work enough on my own, for sure. The ridiculous no-add-drop-beyond-two-weeks rule is also nuts. Anyways. Move on.

It's no much use for learning to actually construct a compiler, either. For that you should probably get a book that illustrates the whole process in detail part-by-part, like Modern Compiler Implementation by Appel, especially considering the scarcity of web resources for this antique topic.

If you really have time/are doing in-depth theoretical study, read it through. Otherwise better think of an alternative strategy for approaching the topic!