Best suggestion to work in the buy side

What kind o tips would you give someone who wants to work in the buy side? For instance in terms of internship/academia . In my particular case, doing a Msc Finance is absolutely necessary (poor undergrad brand). Which kind of master do you suggest to work there (I know, it includes a broad variety of things, I am asking just to have a general idea). Please answer just if you have sth valuable/helpful, I m not a moron.