Resolve is a not-for-profit organization for couples dealing with the issues of infertility. The website includes a wide variety of information on male and female factor infertility and a listing of support groups.
This medical site affiliated, with the Mayo Clinic, provides a broad array of medical literature. Check out the "sexuality oasis" as this section includes useful information.
The ASRM (American Society for Reproductive Medicine) is an organization devoted to advancing knowledge and expertise in reproductive medicine and biology. They have a website for both physicians and laypeople.
Infertility and Related Resources