USG Corporation Drywall Book
The free drywall book by USG Corporation is loaded with numerous photographs and diagrams. I highly recommend that you read it if you want to learn more about drywall. The name of the book is:
- THE GYPSUM CONSTRUCTION HANDBOOK
Published by The United States Gypsum Corporation, Centennial Edition, 2000 (http://www.usg.com)
The United States Gypsum Corporation also has a very handy two-page article on their website entitled Skim Coating Drywall - Application Tips. It is also available for free download in PDF format. Visit their website and enter the titles in their search engine. It will display the link to the publications.