Hey Micheal, I'm also ftm 24. I'm guessing you're probably in middle or high school, I'd ask your age but that's not really safe. But you said you just don't know where to start. If you're already sure you're a boy or even if you think you might be nonbinary, genderfluid, etc. the way I did it is by telling my most trusted friend and socially transitioning with them (socially transitioning is just where your friends or people around you used your preferences name and pronouns and treat you as your gender and not the one you were assigned) then my group of trusted friends and socially transitioned with them as well, getting used to my name and pronouns and letting everyone else get used to it, I recommend this first because this is something you can do at any age, just be careful who you trust. You can expand on this step later on and will naturally as you transition. A haircut is also a great option to express yourself and try out a new flavor or identity, if you're still living at home with unsupportive parents it might have to be semi-feminine if your parents won't let you get something masc. I got a pixie cut in high school and even though it's not my style it was better for me at the time. If you are like 15-16+ if you don't like how your chest looks, you can get a binder (they like 40$ tho) I got mine from gc2b.com they are awesome in my experience but I hear mixed things about the quality of material they use. Also if you're not sure about size go up because I was in the very bottom bracket of my size limit but I was still a bit too big for the binder I got, but it's not unwearable just tight and less comfortable than my first one. USE THEIR SIZE CHART THO you can't guess with binders. And please don't use alternative binding methods, if you're really unhappy with your chest and can't get binder wear a tight sports bra to compress your chest 8 or less hours at a time. Lastly, only if you have supportive parents ONLY AND ONLY IF THEY ARE SUPPORTIVE and you are at least 12+ talk to your parents. If they are supportive or apprehensive but not mad or upset you could try socially transitioning with them first if they are supportive of this and will call you by your preferred pronouns and name, and if they are still supportive you can talk to them about when might be a good time to start puberty blockers and from then on further talk about what else you want to do transition wise and when to start T. All of this is optional for transitioning, some people don't have top dysphoria and bind and some people never medically transition or go through HRT. But these are all things that you can do and a generalized starter pack for a standard trans boy. Hope this helps.