After you install the theme, go to System -> Configuration -> Design.
For the Themes section, set everything to modern, since that’s the name of the theme.
The theme will now be applied.
If you’re running the default install, you can make the front page look how the demo store on here does. For that you’ll need to update the CMS blocks, so go to CMS -> Manage Pages. Click on the Home Page.
You’ll be in the General Information section. Under Content, put the following:
{{block type="core/template" template="sample/home.phtml"}}
You can either comment out what’s already there, or just remove it completely.
Then you need to go to Custom Design and set the Layout to 1 column.
That’s it! Hope It will help you.