How to install WordPress themes
WordPress has hundreds of different free themes which you can use to change the design and how everything on your site/blog is displayed.
Installing new themes is quick and easy. You can do it from your site’s administration panel, or you can upload the new theme manually.
To use the automatic installer, log in to your Dashboard, go to Appearance>Themes, click on the Install Themes tab at the top of the page.
On the Install Themes page you can search for a theme using specific terms or tags, or you can use the filter checkboxes to narrow the results.
Once you’ve marked the checkboxes you want, click on the Find Themes button.
On the Search Results page, under each theme’s name,
you can click on Preview to see a larger picture of the theme and on Details to see its rating and more information about it.
When you find a theme you want to use just click on Install under its name.
After the theme is installed you can go to Appearance > Themes to activate it.
For the manual installation visit the themes section of the official WordPress site,
find the theme you like, download the zip archive to your local computer and unzip it.
Using your favorite FTP client or through SSH upload the unzipped theme folder to your hosting account,
in the themes directory of your WordPress installation (e.g. public_html/wordpress/wp-content/themes).
After that, log in to your Dashboard and go to Appearance > Themes to activate the new theme.