The diyhrt.info link has some more information on injections. This pdf is a guide for injections when using prescribed HRT, and the needle sizes may not be optimal for DIY. It is otherwise a great guide.
It might also be good to mirror some resources from /r/estrogel about how to mix your own medication and include the places where you can buy the raws. (AFAIK dragonordnance is generally trusted?)
Since I’ve finally gotten to the point where I’m now officially on HRT and have DIY'ed but not mixed myself before, I’m sadly not the best source on all that, but it is kinda important to be aware of the possibility as this will be by far the hardest option to take away from us.
Maybe! I've already downloaded a copy of the estrogel and transdiy wikis just in case something there happens (estrogel being featured in the news is what prompted me making this place). I'll look into mirroring some sources.