My best friend. He has been very supportive and accepting. I eventually came out to all my close friends.
My mom, because we have a really good relationship and she has done nothing but support me in every decision I have ever made. She was the first person I came out to and she was really support it and understanding
I came out to my cousin (really close) when I was 13 and then to my best friend when I was 14 (nearly 15)
I came out to my twin brother first although if I wasn't a twin, I would've told one of my friends first.
I first came out to my first girlfriend, then 19 years later to a counsellor/life coach and 20 years later to my closest best friends followed by my Mum (after my Dad died) within a 3 week period. I still need to tell my sister and some other close friends.
I told my coworker first. We were (are still) close friends. She offered me a cup of tea. She was awesome (and she kind of knew anyway, lol) A month later I told my sister (over lunch) And another month later, I told my parents. All ok.
I did the same thing. It took me like 20 minutes (no joke) to say it but I did. Friends are often supportive of you as is family. The best people though, are those who you know for a FACT are supportive of LGBT+ Rights and what not. You go you!