There are two ways to install add-ons. Some add-ons download as a.mcworld /.mcpack. To install it you need to go to your Downloads folder. Double-click on the file and it will automatically be imported to your game. It might ask you to select an app to open it with. Just select to open it with Minecraft: Windows 10 Edition Beta. If you downloaded a.ZIP or.RAR file then use the following tutorial: 1. Begin by and find one which you want to download.