"These webpages address the health concerns of gay, lesbian, bisexual, and transgender people, also known as "GLBT" people and "sexual minorities." It has great sections on mental health issues specifically written for GLBT people. By the Centers for Disease Control and Prevention.
The mission of the Kinsey Institute and website is to foster and promote a greater understanding of human sexuality and relationships through impactful research, outreach, education, and historical preservation.
This site has great sections on sexual education. Especially the 'SexEd Library' and the 'Community Action kit' (both toward bottom of page). Also has good sections on research updates and news on sexual issues.