Still, you probably won’t install all of your software this way, because the App Store doesn’t have all the applications you want. RELATED: Why the Mac App Store Doesn't Have the Applications You Want
Updates are all handled by the store, which is convenient, and any application you purchase on one Mac will work on another.
Your application will download and show up in your “Applications” folder. Open the store, search for the app you want, and click “Get” then “Download.” Still, the Mac App Store is a decent first place to check. We’re all used to app stores on our phones, but on the desktop they remain an oddity. Mac App Store: Click a Button to Install an App