Manuals

Linux

• Linux Complete Command Reference
• O'Reilly - Linux in a Nutshell
• A Practical Guide To Linux Commands, Editors, And Shell Programming

Unix

• O'Reilly Unix in a Nutshell (Also in 'O'Rielly Reference Lib' in HTML form)

Mathematica

• An Introduction To Mathematica
• Getting Started with Mathematica
• A Brief Introduction to Mathematica
• Mathematica Tutorial
• Exploring Analytic Geometry with Mathematica

Perl

• Teach Yourself Perl in 21 Days
• Perl 5 by Example
• O'Reilly Learning Perl (Also in 'O'Rielly Reference Lib' in HTML form)
• O'Reilly Programming Perl (Also in 'O'Rielly Reference Lib' in HTML form)
• O'Reilly Perl in a Nutshell (Also in 'O'Rielly Reference Lib' in HTML form)
• O'Reilly CGI Programming on the World Wide Web (Also in 'O'Rielly Reference Lib' in HTML form)
• O'Reilly Perl Cookbook (Also in 'O'Rielly Reference Lib' in HTML form)

Regular Expressions

• OReilly Regular Expressions Cookbook

SQL

• Manual (HTML)
• SQL The Complete Reference
• Teach yourself sql in 21 days
• SQL A Beginners Guide

MySQL

• Manual (HTML)
• Manual (HTML Split)
• Manual (PDF)
• Manual (HLP)
• Mastering phpMyAdmin For Effective MySQL Management

PHP

• PHP 5 MySQL Programming for the Absolute Beginner
• PHP 5 Power Programming
• PHP Manual
• Pear manual
• Learning PHP and MySQL
• SAMS Teach Yourself PHP4 in 24 Hours

Databases

• Build Your Own Database-Driven Website Using PHP & MySQL
• Database Design - Know It All
• Relational Database Design and Implementation

Web

• O'Reilly Web Design in a Nutshell

Libraries

• O'Rielly Reference Lib