My own experience with coming-out was mixed, especially when it came to my parents.
First, neither of them believed I had reasons to transition. I was just a 'regular guy'. My father especially challenged me on any idea of feminity I might have had. My mother didn't challenge me, but in her mind, thought it was not something concrete, like, I wouldn't transition in her mind. I came to my mother in April 2005, my father in May 2005, separate occasions, since they're divorced.
I moved out the day I told my father (it was already planned, partly because of that).
I told my brother in December 2005, he was pretty supportive, whatever happened. Anything but having me die. He got surprised by my going full-time, like it 'hit him', but he was still supportive.
My mother was with a boyfriend who knew about me (from meeting me times before, he figured it out, I was almost blatantly telling without telling), he really didn't approve of my transition. This affected my mother's opinion, when I went full-time she got shocked and didn't even want us to see each other anymore. I got her an ultimatum; you either see me and we talk, or you never see me again. I was hurt. So we met, and talked...she got more supportive, slightly, though still thinking she'd rather not be with me in public (that was in April 2006).
In May 2006, I convinced her, both by circumstances, and talking, that this was the way it was doing to be (as a girl, no compromise), and to have me stay with her again. She got a lot more supportive over time...but it took a while.
My father, not being with me since May 2005, took a while longer to accept me as a girl...he more or less sees me as his daughter now.
My three brothers were the first to see me as who I was.
I didn't gauge reactions from friends as deeply, but most were supportive.
----------
And note that, however feminine you might have been as a child, parents can think it's just normal boy behavior anyway. I was shy, pacifist (never fought) and the complete opposite of my roughousing brother (who's just 2 years younger than me), I got bullied, and he would beat the bullies...so yeah to convince my parents I was a girl then, I'd needed to have the clothes and act really really intentionally like a stereotype...when I was a kid. It took a while for them to get past that and let reality hit them in the face...especially when I went full-time. and following months.
