Go read the entire Gender Dysphoria Bible to start. You may be able to start HRT sooner than you think, depending on where you are. There are programs that may help, or specialized clinics that offer cheaper care. A therapist, if you can afford it, is highly recommended!
If you can't or don't want to medically transition, that's totally valid, too! You could socially transition. Choosing a new name can be super difficult (ask me how I know) and voice training is likewise difficult and a slow process, and neither of these require anything but you and your mind. Clothing helps with dysphoria, as well as makeup/hair/nails/jewelry or even just social groups and hobbies. Thrift stores are likely to have cheap options for beginners.
The other thing I would suggest is figuring out your support group. You do NOT have to do this alone. Whether it's online communities like this one (<3 Blåhaj!) or real world friend groups or support groups, go find peers or allies.
Welcome to the sisterhood! I hope you find yourself soon :)