Setting up Minecraft on MacBook pro
I Just purchased a MacBook Pro. Before I ask my question let me preface this by saying I know nothing about computers. I wanted to install Minecraft for my son. I downloaded it but the Mac keeps telling me to install it. I've ended up installing it 3 times. And we still can't figure out how to open it. Can someone dumb this down for me? Also is there a way to save this to our desktop or the task bar at the bottom of the screen? Thanks.
MacBook Pro (Retina, 15-inch, Mid 2015), iOS 9.2