Well, if you have any specific questions, feel free to ask, I'll share what I'm comfortable with.
In terms of just like, general thoughts, I'd suggest checking out the My Gender Workbook (https://www.amazon.com/gp/product/0415538653/ref=ppx\_yo\_dt\_b\_asin\_title\_o05\_s00?ie=UTF8&psc=1). My counselor suggested this to me when I started really digging into my own identity and it really helped me out but I also know it's not everyone's cup of tea.
What my main take away from the book and thinking about gender is what society deems male/female. How even people who are assigned one gender at birth, who don't question their gender at all, still have specific actions they preform because of what society tells them. Or rather... I am AMAB and I used to get caught up in like... "I have to look a specific way" or "I need to wear a specific piece of clothing" but that isn't true. Someone who identifies as female, was assigned female at birth, they don't lose their female status by removing bras or not wearing make up.
I guess I just had these really deep ingrained ideas of what male/female is, so realizing that those were artificial, that someone somewhere decided these things helped me go, "ok, I can identify as female and not wear a bra, or wear make up."
I had another point I was going to talk about but I have since forgotten it. lol
I don't see the original Hitachi that I've got but if money is an issue I guess this might be better anyway as it's cheaper: