C language:

            C Library Reference Guide

           

       C language tutorial

 

            Programming in C Notes

 

       Animated basic C tutorial

 

    Debuggers:

 

gdb tutorial

 

gdb for the unix newbie

 

       dbx tutorial

 

  Java:

 

Java Language Specification

 

 

Unix:

       Unix Tutorial for Beginners (U. Alberta)

       Cal Tech Big Unix Tutorial

       A Unix Course at Ohio State University

       U Texas Unix help

    Emacs:

       Emacs User's Guide (U. Southern Maine)

 

    lex/flex tutorials:

        creating a lex scanner

   Lex - a text scanner (lots of useful information here, with examples for makefiles)
   flex (a scanner generator) tutorial
   lex and yacc FAQ

JLex: A Lexical Analyzer for Java

Webpage Design
 
  Tips for writing webpage content backed by research

Research-based Web Design & Usability Guidelines