Zines have long been a place for honest discussions of gender identity, sexuality, and sexual experience. Many zines include at least some content on these topics; listed here are a few examples from the Schlesinger collection that more explicitly focus on them as a central theme.
To find zines like these, try a HOLLIS search using the form/genre term "zines" plus a subject term like "sex" or "lesbians" or "gender identity."