Here's a list of web sites, articles and other cleaning related material :
Articles I've written for the cleaning industry:
How Are Cleaning Sponges Made?
What to Clean Stained Rain Gutters With
Extension Pole Techniques for Window Washing
Carpet & Cleaning
Why Do You Have to Use Lintless Rags to Wash Windows?
Can Stucco Be Pressure Washed?
Troubleshooting a Honda Pressure Washer
How to Rid Your Lawn of Armadillos
Useful articles I've come across:
Carpet Cleaning Tips
Tips for Cleaning Windows