Doing Botox yourself?

If you did a lot of research and were willing to put up with a lot of uninformed kneejerk responses and clever ‘warnings’, where can you find info about learning to do botox? It’s seems to a big ripoff by the beauty industry for what is ostensibly a simple procedure.
I should mention that I (we) want to learn this for treatment of migraines, not vanity.

Thanks in advance for any answer that isn’t some witless variation on “OMG, that’s totally like SO dangerous, blah-blah-blah…”