One of the best things about PC titles is that almost all games can have pretty much every action remapped. Shift is the standard, and it works for the most part, but for some people it's too much of a stretch. Some people like to swap sprint and jump (Shift and Space, respectively) because space is easier to get to and usually you're sprinting way more than you're jumping. The 2 "golden buttons" are easily "Q" and "E", as they're the easiest to get to and are frequently used for your most important actions. Be sure to remap your keys before you ever getin into a game, it helps with muscle memory and you'll be playing any game like a pro in no time!