1. Select Appearance on the left menu.
2. Select the Install Themes tab at the top.
3. From this screen you can browse or search for a specific theme. For the purposes of this example, we will use a theme named Pixel.
4. Once you have found a theme, select the Install link below it’s thumbnail.
5. Select Install Now.
6. Select the Activate link to apply your new theme.
7. You can now go to your WordPress site and see your blog now has the new theme.