Or see my Amazon List of Books on Adult ADHD

CHADD of San Diego (worth membership)
Unbiased information from the National Institute of Mental Health
CHADD’s collaboration with the Centers for Disease Control
Canada’s ADHD guidelines (Sections for Adults start on Chapter 7)
ADDitude Magazine (worth subscribing to)
ADD Warehouse
ADD Consults
addcoach4u (an exemplary coaching oriented site full of more resources)
Office Playground (where I get the cool balls, stress relievers, and fidgets in my office)
LifeHack.org