To access WebApps.....
Go to 'My Services' in your account,
Click on 'View Details' to the right of your product.
Click on 'Login to cPanel'
This will log you into yoor hosting control panel
Scroll down to the 'Software/Servces' section and click on 'Softaculos' .
Here you will find all the WebApps available to install.
(some apps require a mysql database)
Click on the app you wish to install and click install.
If you leave the directory field empty, it will install at the base of your site (the first thing you will see when your site loads)
Fill out th rest of the form and click install at the bottom.
And you're done