Help with moving to brazil and the requirements?

i'll be moving to brazil in october and im wondering what exact requirements i will need to live there. i am turning in my passport application saturday morning and i'd like to know what else i will need to get there and stay there legally. should i talk to the people at the post office about visas and other stuff i will need? also i know im going to need to get a few vaccinations, not sure exactly which ones i have to get though.any help or info on the stuff listed above would be greatly appreciated, thanks!