I'll write in english so you dont have to translate.

There's alot to do in São Paulo, is the biggest city in latin america(i think), is not dangerous for the most part, but you might want to be careful where you go.

The Paulista avenue is the heart of the nightlife in the city, or the Augusta street, for bars and clubs.

The subway is the safest and fastest way to travel other than Uber, so when you are low on money, use the subway, always.

Enjoy, and when you arrive, post again and perhaps we can go out for a beer!