Antijen is run by Aunty - who hosts many lists relating to transitioning for both families and the person in transition. It's a great resource with very nice, understanding people behind it.
Gendertalk.com is a resource for trans persons and folks interested in
learning about - and with - us. Created & maintained by Nancy Nangeroni,
gendertalk.com provides comprehensive access to GenderTalk Radio, the
leading radio program on transgender issues. PLUS, a carefully screened
list of the best resources by, for, and about transgender people, as
well as a suggested reading list, writings by Nancy Nangeroni and
others, source files for the original transgender symbol, and much
more.