stick with Jack Crenshaw's "Let's build a compiler" http://www.penguin.cz/~radek/book/lets_build_a_compiler.pdf http://www.penguin.cz/~radek/book/lets_build_a_c

stick with Jack Crenshaw's "Let's build a compiler" http://www.penguin.cz/~radek/book/lets_build_a_compiler.pdf http://www.penguin.cz/~radek/book/lets_build_a_compiler.pdf It is free and doesn't make bogus promises (also written well like his Embedded Systems Programming columns).