Based out of the UK, this foundation seeks to increase education, awareness, research and treatment of and for BDD. Their website has resources for individuals with BDD and professionals. Read stories of other people who have BDD.
This BDD page from the International OCD Foundation describes BDD and its treatments, as well as resources for families and teens. They also have resources that can help you determine whether you may benefit from seeking treatment for BDD.
OCD Action's mission is to work for a society where OCD is better understood and diagnosed quickly and where appropriate treatment options, support and information and where nobody feels ashamed to ask for help. Their page on BDD gives some history to the disorder, as well as information about diagnoses and outlook.
Doing an online search for "Body Dysmorphic Disorder chat groups" or "BDD online support" can help you find online forums for support and community.