Brazil B2B is a consulting firm specialized in Latin American business.

Below a list of useful links:
LANIC LATIN AMERICAN NETWORK INFORMATION CENTER
Latin Trade pan-regional business publication in Latin America
Brazil council The Brazil-U.S. Business Council is a private sector organization focused on promoting the free flow of trade and investment between Brazil and the United States
CIA fact book Statistics about Brazil
Brazilian Embassy Washington DC
US Citizen Visa requirements Tourist or Business visa requirements
Visa how to FAQ for Brazilian visa
Cheap flights to Brazil Not the single source, but a start.