When I came out to my Family on Xmas 2014, I did it by talking to each family member one on one.
I decided to start with the one who I know would be most understanding and worked my way to the hardest.
So for me it was my Sister, Mom ,Dad.
I just explained how i felt and what I have been hiding since I was 8 yrs old. I was so nervous and scared, but it is expected.
After all, your family has known you as one person your whole life.
Once I told them they were all 100% behind me and you have no idea how a 40 yr burden taken off my back suddenly felt! OMG the relief at that moment had me crying non-stop due to happiness.
Once I was out, my Mom especially wanted to tell all her friends ect as did my sister (over the course of a yr) and I think everyone we know...knows now.
What I learned from this is just BE YOU, BE HONEST, Be ready to explain to them what Dysphoria is, they probably won't ask, but DO kinda inform them to help them understand.
If you have a significant other, do NOT push them into understanding you, It may backfire (As it did me) so let time help them understand. Once I slowed down, my Wife is now 100% behind me.
I learned after the fact that there is no reason to not tell your family anything you feel might hurt your feelings. It's Your Family!
So back to the actual title in this topic:
1. Just tell them you are Transgender.
2. Listen to what they have to say.
3. Be yourself
*hugs*
Jess