Welcome Rebecca from Tennessee by way of Seattle with a law degree and a fun hobby.
You will need strong will power to "immerse" yourself in Spanish if you come to Buenos Aires. Also, you will have to relearn some verb tenses that are only used in Argentine, most of Uruguay, and a smattering of spots in lower Central America. You may also get thrown by the completely wacky pronunciation that sounds like virtually no other Spanish that you've ever heard.
But it's fun. Hopefully it will expand your ability to understand various Spanish accents.
I want to make a suggestion BEFORE you "dive in and start asking too many questions."
PLEASE USE THE "SEARCH" FUNCTION FOR ANY AND ALL QUESTIONS THAT YOU MAY HAVE.
Then... then you should come here to ask any questions that haven't already been answered.
The pluses are that there's no waiting for someone with the knowledge to hopefully respond, because it's all there. And some of the responses are from people who don't even live here anymore and therefore don't follow this board anymore, but that doesn't make them any less pertinent.
Just want to say that the Jacaranda trees are blooming right now and the most important polo tournament in the world is currently being held, but that's just spring in Buenos Aires. Read up, look around, and then come back with your questions.
Bienvenido!