HUGE RESOURCES WITH FORUMS, GALLERIES, TUTORIALS, ETC.
TUTORIALS, BOOKS, DOCUMENTATIONS
http://francescolegrenzi.com/blog/index.php
http://www.spot3d.com/vray/help/150SP1/
MATERIALS, TEXTURES, IMAGES
SCRIPTS & PLUGINS
GALLERIES_GET INSPIRATION OR CREATE A PORTFOLIO
INTERESTING BLOGS ABOUT ARCHITECTURAL VISUALIZATION
http://www.peterguthrie.net/blog/