I've tried my best to research some of the best Bitcoin starting points in countries like South Korea, India, Brazil, Mexico, Argentina (from reviews, bitcointalk threads, forums, etc) and would like to know if someone could help, mostly in listing the most popular, safe, and reputable exchanges for countries.
Try going to the local boards of these countries and try asking there by creating a topic(assuming you haven't yet); I'm pretty sure some people are willing to help. Just cross your fingers and hope that the person(or people) that would be willing to help you knows how to speak decent English.

Great advice, fingers crossed.