The App Store works very similar to all iPhone application with a task bar of tabs at the bottom of the screen and the main interactive interface in the rest of the screen. When you open the App store you will already be opened into the first tab, which is called Featured. This is where “featured” applications may be sitting, such as new high profile games and promotional software that Apple has financial stake in you downloading. These applications are rarely free and if they are they are usually an extension of a corporate brand image. At the top there currently is a countdown to the one billion application download for the App Store.
The next tab in line is the Category one that divides the programs into their respective genre like games, entertainment, utility, or reference. When you select one of these you can then look at list of the top paid applications within that genre, the top free applications, and new ones lined up by release date.
The next tab is the Top 25 one and simply lists the top twenty-five most popular iPhone and iPod Touch applications available at the App Store right now. Right next to that is the Search tab that allows you to search the App Store for specific keywords. This works best if you just try to search for words found in the programs name or developer title.
The last one is Updates and lists all of your applications that are ready for updates. In the upper right hand corner there is a button titled Update All that you can press and have updates begin on all applications. Since you are doing this either through the 3G network or a Wi-Fi connection you will not be able to update all as some files will be much too large. For these you will have to plug your iPhone or iPod Touch into your computer and update using the desktop version of iTunes.