I agree with Redpepper in that you need to see where the relationship is going before you plan too far or try to steer it where it doesn't naturally want to go.
But once you get to a phase where you are ready to tell friends and family, there are several threads on this board on coming out. But I think the main point is not to act defensive and point out that you are happy. Some people may reject it, but still want you as friend/family. They can be difficult, but I think over time they can be won over as they see it is not as horrible as they imagined. Some will be ok. But some may not want to hang around you anymore. In a sense, you find out who is really your friend.