Agility Ability – Interesting site with Agility information – start at the “Agility Explained” page
Agility Articles – Training and handling tips by nationally-known competitor and instructor, Nancy Geyes
AKC Agility Page – includes AKC regulations, info about height card, etc.
Clean Run – web site by the best (and only US) monthly Agility magazine
Squidoo Dog Agility – Lots of Agility information