Once you're at the iTunes Store, you have two options. First, you can search for an app by typing its name into the search field at the top-right corner of the iTunes window. Or you can look for the row of buttons across the top. In the middle of that row is App Store. You can click that to go to the homepage of the App Store.
Search
To search for a specific app, or a general type of app, enter your search term in the search bar in the top right and press Return or Enter.
Your list of search results will show all the items in the iTunes Store that match your search. This includes music, movies, books, apps, and more. At this point, you can:
- Results Categories - click either iPhone Apps or iPad Apps in the right column to narrow your search results and see a full screen of apps
- See All - Click the See All link at the far right of either search results box to see all the apps that matched your search
- Select an app - If the app you're looking for turned up in the initial group of search results, click it.
Browse
If you don't know the exact app you're looking for, you'll want to browse the App Store. The homepage of the App Store features lots of apps, but you can find even more either by clicking on the links on the right side of the homepage or by clicking the arrow in the App Store menu at the top of the page. This drops down a menu that shows all the categories of apps available in the store. Click the category you're interested in viewing.
Whether you searched or browsed, when you've found the app you want to download (if it's free) or buy (if it's not), click on it.