Resources pertaining to issues of sex, including gender issues, sexual orientation issues, sexuality and the age old debate of the roles of men and women is now just a few keystrokes away, providing you have an internet browser and a bit of time and ingenuity.
Search engines, such as Yahoo <http://www.yahoo.com>, Alta Vista <http://www.altavista.digital.com/> and Lycos <http://www.lycos.com/> are the most obvious starting point.
However, there are already many well organized resources containing large amounts of statistical and personal information on these topics that preclude using the more well known search engines. Below are several starting points that forego the unpleasant experience of having to search through 33000 sites (number most likely UNDERexaggerated) you would get in a search engine.
The Webring <http://www.webring.org>
The webring links together sites of similar interests, in a peer-managed 'ring' of sites. Clicking on the pre-programmed 'next' link will bring you to the next site in the ring, 'previous' to a previous site, etc. Some rings contain less than 10 websites, while others contain more than 1000!
I typed "Gender" into the search engine found at the Webring. Of the 69 matches it returned, the largest ring, "The West Hollywood Ring" contained 940 member sites. This ring is dedicated to the Gay/Lesbian/Bi community of geocities.com. The next two biggest rings from this search yielded "The Queer Ring" (849 sites) and "The Global Transgender Ring" (589 sites). Two smaller but interesting looking rings were the "Men Against Violence Ring" (ironically, a mere 9 sites) and the "Equality Project Ring," seeking to include sites of all genders (43 sites).
In addition to the Webring, two other sites of note.
<http://www.mit.edu:8001/people/sorokin/women/index.html> The "Women's Homepage" is a comprehensive page of links on women in Academia. It contains links to women in most academic professions, with a special emphasis on women in the sciences.
<http://www.vix.com/men/index.html> is the Men's Issues page. This is linked to a subindex page containing 1079 resources related to Men's issues. An amazingly thorough resource.
Finally, Japan's own "Rainbow Educator's Network" <http://www2.gol.com/users/aidsed/rainbow/index.html> "...offers information to educators who are concerned about gay, lesbian and bisexual issues in the English as a Foreign Language (EFL) classroom, teaching ideas, reference materials and links to other glb educational websites." Well worth the visit for materials targeted specifically for EFL students in Japan.