Why's Poignant Guide to Ruby
http://www.scribd.com/doc/8545174/Whys-Poignant-Guide-to-Ruby
A List Apart: Style Guide - Writing Articles for the Web
http://alistapart.com/contribute/styleguide/
mod_rewrite Demystified: A Brief Guide With Resources - PHP
http://quadpoint.org/articles/mod_rewrite
Ultimate Web Development Cheat Sheet Guide
http://www.realsoftwaredevelopment.com/2007/08/ultimate-web-de.html