Home Depot: Walls

Diagrams and short tutorials explaining how to fix small and large holes, and how to reset nails.
http://www.homedepot.com/prel80/HDUS/EN_US/diy_main/pg_diy.jsp?CNTTYPE=NAVIGATION&CNTKEY=fixit/walls/index.jsp

Wallpaper Outlet

Hanging instructions.
http://www.wallpaperoutlet.com/hanging.htm

Teach Me DIY

Several Flash animated tutorials demonstrating techniques such as plastering, coving, and putting up a plasterboard partition.
http://www.teachmediy.co.uk/

Walls and Ceilings Magazine

Magazine covers drywall, lath and plaster, stucco, acoustics, exterior insulation finish systems, fireproofing, metal framing and architectural decorative ornamentation. Feature articles, trade forum, subscription, and product information.
http://www.wconline.com/

Fine Homebuilding - Framing

Articles on proper technique, common engineering problems, and cutting wall plates to length by eye.
http://www.taunton.com/finehomebuilding/pages/fh_feat_framing.asp

Border Trim

Step-by-step application instructions.
http://hometown.aol.com/spikon0690/myhomepage/howto.html

Als Home Improvement

Illustrated tutorials for installing crown and other interior molding.
http://alsnetbiz.com/homeimprovement/carpentry.html

HomeStore.com: Wall Covering Articles

Step-by-step tutorials, photographs, and diagrams for a variety of wall projects.
http://www.homestore.com/HomeGarden/homeimprovement/howtos/howtos/DefaultWallCoverings.asp

Better Homes and Gardens: Wall Decorating Ideas

Collection of articles with decorating tips.
http://www.bhg.com/home/Wall-Decorating-Ideas.html

IHDG.com: Install It Yourself

Step-by-step instructions and photographs for installing, estimating, and caring for wallpaper as well as design tips.
http://www.ihdg.com/global/content/howto/

Wallpaper Installer Rebecca Schunck

Comprehensive wallpaper information including FAQs, photographs, diagrams, step-by-step instructions, dictionary, forum, and tips for estimating, hanging, and repairing wallpaper.
http://www.wallpaperinstaller.com/

Hometime: Drywall

Photographs, instructions, and advice. Steps include tools and materials, cutting drywall, hanging drywall on ceilings and walls, and repairing.
http://www.hometime.com/Howto/projects/drywall.htm

Art of Texturing

Guide to texturing walls and ceilings, including preparation, patterning, re-texturing, repairs, painting, maintenance, and problem solving.
http://www.artoftexturing.com/

Ask the Builder: Drywall

Answers to questions about installing drywall.
http://www.askthebuilder.com/DrywallPlaster.shtml

Easy2Diy.com: Hanging Drywall

Outline and basic steps with illustrations. Also includes animated instructions.
http://www.easy2diy.com/cm/easy/diy_ht_index.asp?page_id=35693854