Coming off a year with no NCAA basketball tournament, it might be good to get a refresher on how to set the perfect bracket and Mackenzie Salmon is here to help. » Subscribe to USA TODAY Sports: https://bit.ly/2L0ktE1 » USA TODAY delivers current local and national news, sports, entertainment,  finance, technology, and more through award-winning journalism, photos, videos and VR. #MarchMadness #NCAAtournament #bracket