If your husband is a Mexican citizen, then your daughter is as well. She just needs proof. Once you settle in Mexico, take her original birth certificate, your husband's original birth certificate (and probably yours too) along with a couple copies of each to the local Registro Civil. There will be one in every town of anything resembling a decent size. They should issue her a Mexican birth certificate.

You can obtain Mexican citizenship after living in Mexico for a certain number of years (5, I think...unless you give birth to another child in Mexico and then I think that it's 2).

We are homeschooling, so I'm biased, but I think that you should plan on continuing to homeschool. The results that we've seen from the local schools is pretty sad. If you normally depend on the library for much of your curriculum, you may need to figure out something different.

Different. It's very inexpensive, but things you take for granted like the doctor wearing gloves don't routinely happen. At least not where we are.

Knowing the right person always helps in Mexico. The head of the office where we were is a family friend. He asked my husband if I knew how to drive and then told the staff to issue the license for the standard fee. I think that they required a copy of my birth certificate and marriage license (because of my married name).

You can exchange money at any number of exchange houses, banks or I've yet to go anywhere where they weren't happy to take dollars.