Hello to all!

Well, I have a few questions regarding portuguese citizenship...

I am an american, about to marry with a brazillian in Brazil. We shall go through the process for my fiance to obtain an immigration visa so that we can move to the US as soon as possible. He is also currently in the process of getting his portuguese citizenship, however this should delay several years until it finally comes through. After his citizenship comes, we are planning to move from the US to Europe.
My questions are:

Will I be able to obtain portuguese citizenship through our marriage after he receives his? Consequently, will I be able to move with him to Europe right away?

What specifically is the process for american spouses of EU citizens?

Will I be able to work and/or study immediately after moving there?

I thank you for your time, and anticipate any information or advice you have,

Kristen