Hofstede, G. (n.d.). Compare countries. Hofstede Insights. This website allows access to the data collected as part of Geert Hofstede’s study of cultures in over 50 nations based on his famous dimensions of culture (now numbering 6). It also has descriptions of those dimensions.
This e-book has a chapter on Brazilian business culture (Chapter 5) and India (Chapter 11). Do be aware it is 2008, and though societal cultures typically do not change rapidly, do consider potential changes since that time.