As a CS student from Brazil, what opportunities do you think Brazil has in terms of startups that is different from silicon valley and which methods that work there would work here as well??
I'm not Sam, but I'm a Brazilian enterpreneur. The bad side of Brazil, compared to SV, is we have way less capital available to fund startups, specially earlier and more innovative ones. Our government doesn't help either, definitely way harder to be an Enterpreneur here (not only for startups, the same is true for small businesses as well). The good part is you don't have as much competition when doing a product that targets the local market. And there are much more unsolved problems and needs to be tackled here.
I believe most of YC's advice is universal and fits Brazil's startups well. Some are even more important here: try to make money from day one and spend as little as you can - you can't count on investors money here, no matter how good your KPIs are.