The alterhuman label covers a lot of ground, and explaining every subculture that fits the bill is far outwith the scope of this site. Instead, we provide select articles and sites from the communities themselves which go into much better detail.
More Than One - A small site laying out basic info about being multiple self-aware entities inside one physical brain.
Project Shift - "an information and resource site, aimed at providing the public with up-to-date information on therianthropy and the therianthropic community."
Noctalium - A Spanish-language website mainly focused on modern/'real' vampires but with some information on otherkin and therians as well.