Hey Michelle there’s so much to know about HRT. I’ll recommend 2 things to get you started.
First, get into gender therapy. If you have gender dysphoria, you’re a good candidate for HRT. Therapy will help you figure that out.
Second, do tons of research. Learn everything you can about HRT. There are significant risks. There are a wide range of physical and psychological effects. Some you probably aren’t aware of.
Honestly, you’ll need to look on other sites for most of this info. Reddit has a ton of subs that get into the weeds. There are a number of blogs that have good info. Then there are a multitude of academic and clinical papers if you can tolerate highly technical info.