Fashion tip 1: Don’t care about fashion as dictated by others and just enjoy what you enjoy.

I don’t know a lot, but this website has some guides that seem useful

https://www.transvitae.com/rule-of-thirds-trans-womans-guide/

This particular one may be focused on transfemmes but a lot of their articles address transmasc concerns too.

My access to feminine clothes is fairly limited and I don’t know much about it at the moment, but I absolutely love long light dresses. No other type of clothes that I ever wore comes close to them, they are really comfortable to wear and really affirming. I also love to spin around in them. I assume that long skirts are similar so I really want to try them on too.