/Applications/
Application folder or in the "Dock".
Usually in the applications folder, but Apple discontinued iLife. The best thing to do is to find a similar application.
The file will already be on their if youve transfered it.
By the look of the file that you wish to install onto your MacBook Pro "setupexe", it seems like you are trying to install and use a Windows application. This can be seen because any application with the extension "exe" is an executable file and is made for Windows. You cannot install or use these sorts of application using Mac OS. Unless you have BootCamp and Windows installed on your Mac, you cannot use these applications. If you do have BootCamp and Windows installed, simply boot your machine into the Windows OS and install your "exe" file.
MacBook Pro is the best you can get
Copy the minecraft worlds from the file explorer
once you download the map (this goes for any downloaded map by-the-way) take the folder with the map files, and place it in the "saves" folder of your minecraft files. to get to the minecraft files on Mac: go to finder library application support Minecraft OR - shortcut is SHIFT+COMMAND+G then type: ~/library/application support/minecraft
MacBook Pro!
The macbook pro!
you probably should get the MacBook. they are cheaper than the MacBook Pro. now, if you want a bigger screen, then get a MacBook Pro.
There is no age limit for getting a MacBook Pro.
Download the map, and open a new window in Finder. The search for Library, and in that folder there will be another folder called Application Support. Look for the Minecraft folder, then open the saves folder and drag in the custom map. There are a lot of folders, but you can also put texture packs in similarly, but put them in texture packs instead of saves.