I´m learning english by myself too. I study by livemocha and inglês verde e amarelo.
Where are you from?
Here in São you can eat goods pizzas in everywhere. I can to suggest Michelúcio aand Zi Tereza in the Consolação street. If you like a charming and traditional american bar and restaurant you can go to Brhamas in te São João avenue corner with Ipiranga avenue.