If you are interested in a printed version of a great beginner's compiler book, I can highly recommend Andrew W. Appel's "Modern Compiler in C". There are also

If you are interested in a printed version of a great beginner's compiler book, I can highly recommend Andrew W. Appel's "Modern Compiler in C". There are also versions of the book written for SML or Java. I have read and partially implemented the C version and I really enjoyed the book, basic enough to follow yet full-featured enough to be useful. The book starts with parsing (I prefer PEG or Pratt parsers for their simplicity (and tool independence) to be honest and skipped some of that chapter) but then goes into semantic analysis, type checking, code generation, optimization passes, even mentions basic type inference. There is some code online at http://www.cs.princeton.edu/~appel/modern/c/ http://www.cs.princeton.edu/~appel/modern/c/ .