Hi! Welcome to the forums ^^
Well first off, I'm glad to hear you're finally comfortable with your sexuality. I know how relieving it can feel to finally come to terms with things about yourself.
Secondly, coming out is just about the hardest thing for any homosexual person... I've got so many friends who've got both happy and sad stories to tell. Having a friend there with you can really help you. You might also try singling out family members one at a time, and slowly collect them as support while you go around the house before talking to the hardest person, whoever it is!
Lastly, I unfortunately don't have any good lesbian dating support sites ^^u Or any helpful information about that...