So Hermonie is a Muggle-Born Witch, meaning she is a witch despite coming from a No-Maj family.

When we see her, she is already a learned witch having buried her nose so far into the books that she effortlessly and immediately fixes Harry's glasses upon meeting him. She is shown buried in the art of witchcraft so much so that she sees being expelled from Hogwarts as less preferable than Death.

Given that she came from ordinary humans, how does this work?

Because, her parents didn't know magic existed until they got the letter from Hogwarts. How did they know to go to Diagon Alley to get Hermonie's wizarding supplies? How did they know how to find Diagon Alley? How did they pay for Hermonie's supplies with British Pounds, since they obviously don't have wizard money? Why did they even humor the idea of a Wizard School wanting to teach Hermonie magic instead of writing it off as a joke or scam?

How is it that Hermonie immediately started studying and completely skipped the "Holy shit, magic is real!" phase that should naturally come with all of this?

I mean Harry didn't know any of this either, but he had Hagrid helping him.

Did someone from the school take Hermonie to Diagon Alley and help her? Did they pay for her books? If there's a financial aid program, why didn't it help Ron?

I just have so many questions about what goes into getting a Muggle-Born Magic User ready for Magic School.