Virginia Wrestling: Mostly geared towards high school wrestling, but the forums are a useful source for tournaments and camps in the off-season.
Flowrestling: The best website out there for what’s happening in the sport. Their Technique Wave section requires a subscription, but it’s the most comprehensive set of instructional videos you’ll find.
Chantilly High School: It’s given by the high school team, in their wrestling room, with great guest coaches. Definitely the best bang-for-your-buck camp you’ll find in the area.