Deadly Sins - http://gcc.gnu.org/wiki/DeadlySins For a compiler writer from P. J. Brown's Writing Interactive Compilers and Interpreters.
Compilers Construction - http://www.personal.kent.edu/~rmuhamma/Compilers/compiler.html Notes on compiler theory, the source code of describing actual construction of compiler in C programming language. Also compiler construction related links to books, notes, tutorials, and news groups.
Let's Build a Compiler - http://compilers.iecc.com/crenshaw/ A multi-part tutorial on compiler construction by Jack Crenshaw.
FreeTechBooks - Compiler Design and Construction - http://www.freetechbooks.com/viewforum.php?f=14 Collection of online articles and books on language design, compiler design and construction, and compiler tools.
Creating A Language - http://home10.inet.tele.dk/moelhave/tutors/misc/createlanguage.htm Very short introduction to lexical analysis, parsing, and type analysis by Fabio Fernandes.
Programming Language Research Links - http://www.cs.cmu.edu/afs/cs.cmu.edu/user/mleone/web/language-research.html Links to resources for research in programming language theory, design, implementation, and related areas. (Mark Leone, Carnegie Mellon University)
Basics of Compiler Design - http://www.diku.dk/hjemmesider/ansatte/torbenm/Basics/ Freely available textbook by Torben Mogensen. It covers lexical and syntax analysis, symbol tables and type analysis, and code generation including register allocation and function calls.
Theory of Computation - http://www.seas.upenn.edu/~cit596/notes/dave/syllabus.html A complete mini-course on Formal Languages and Automata
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