I went to a therapist first, told my mom I wanted to see one, cause I was having issues, I found a gender therapist and went to her first and then I came home and my mom was like how did it go, I go well I'm not crazy or gay but need to talk to you about something and from there I tried in my own words to explain I was transgender, that I want to be a guy and how sex and gender are two different things and how I researched it, I showed some youtube videos I found online explaining it also. I also said ever since I was a kid I wanted to be a boy, and my moms like I know, you only played with guy stuff but I thought you was just a tomboy. Here are two videos I showed my mom.
http://vimeo.com/album/2156556/video/75314149Articles and videos online that I could find that was educational, my mom was willing to watch, my mom is against hormones because shes worried about the side effects, I eventually brought my mom to a therapist session with me and let the therapist explain to my mom about it, that kind of helped, I think as time passes, my mom becomes more accepting, she is willing to come with me and talk to the doctor about hormones in May, so hoping it goes well. Although my mom is having a hard time distinguishing butch lesbian and transgender, she can't figure out why I can't just be a butch lesbian and why I want to take hormones, its a lot to understand, so hoping time helps. SHe still calls me my legal name, but she doesn't give me a hard time about guy haircuts, clothes and products, so it all just takes time I guess. Hope this helped, its a tricky subject to get through to family