Hai, Although this app is exclusively for GRE, my friend want to study PG in medicine in abroad but

Hai, Although this app is exclusively for GRE, my friend want to study PG in medicine in abroad but doesn't how and where to begin, any suggestions would be very helpful, and is there any app like yocket for PG studies in medicine that she can download ? She is currently studying her UG in YSMU in Armenia.