Hey dude,
nice to meet you!
A good place to start is to get yourself a good gender therapist. In many countries you will need one if you want to get hormone therapy etc. They can help you sort out your transition, how to come out, how to deal with your fear.
Fear is a tough one. You're welcome to talk about your fears and share them on this site. A lot of people are likely to have gone through the same things as you and may be able to offer some helpful insight.