One of the most popular coins to collect. Really good examples will have the full horn of the buffalo. There are several varieties (on the mound/not on the mound, three legged) that can be collected. A recommendation that will help you immensely is to get a Red Book (A Guide Book Of United States Coins). Check at you local library, I bet they have one, or buy a used one on e-bay.
I like buffalo nickeks......awe heck I like em all, but the Buffalo nickels are cool. I always had good luck finding them while roll hunting too. Usually the later dates, but it's still fun to find'em roll hunting. True dat!
MS60 to MS70 is the uncirculated grading scale. Link about Buffalo Nickel >> http://www.ngccoin.com/coin-explorer/buffalo-five-cents-pscid-24
Oh, I'm new at this, I just started coin collecting sooooooo.... I don't understand every team people are using