Does his book actually teach you how to create a DSL using ANTLR and not just and overview? Btw the 2 books of his are almost a decade old, so are they any good now?
"The Definitive ANTLR 4 Reference" is absolutely the most understated title I've ever seen in a book. It's really more like "The Book That Will Change How you Look at Programming Languages Forever"
IMO anyway. I guess it depends on how much you've been exposed to parsers and grammars and compiler compilers already.