Hi,

This is not a difficult task. Also I could be of more help, if you specified which type of "app" you wish to install.

You can do this:

1. Browse the store to locate the app you wish to install.
2. Free apps will show an Add to Chrome button on their Details page. If the button specifies a price, you will need to purchase the app.
3. The app will automatically install and the icon for it will appear under the Apps section of the New Tab page

Hope this helps!