How can you download minecraft on your MacBook Pro?

It should be the same as you would on a Windows, just go to the website, download it, and then run it as you would.

https://minecraft.net/download

I believe that this link is not accessible by the main page, but if you already have an account, you can go to this link and download the game by clicking the blue text under the bold letters "MineCraft for Mac OSX"