First off, Brazilians speak Portuguese, not Spanish. The two languages are quite different, so even if you speak fluent Spanish you’ll probably have a tough time understanding the language.
I have put together 10 phrases that I first learned when I moved to Brazil, and I that I think YOU should know if you are planning on traveling to Brazil! At the end of the blog post, Geo and I made a Youtube video where you can hear the pronunciation. I think this is so important, because the words might not sound like you expect!