18M straight ally

Three questions for the trans community, since in this ever changing world, a friend or a sibling may come out to me as trans and I’m high as shit rn and saw posts about trans people coming out and being treated horribly by others so, in order

1:How do I make things easier if a trans person comes out to me.

2:How can I help with things like, Gender affirming care, or simply making sure they can do things like live basic life in our local area

3:(take this one with a grain of salt as it’s meant to make you laugh) can I give a trans person my testosterone, I’ve playing games like mw2 and many other toxic masculinity games since I was six and honestly I could do with being less of an loud asshole