Today we will walkthrough on installing theme in WordPress CMS. 

1. First, visit WordPress dashboard.

2. Go to ‘Appearance’ option on the left. Here you will see some default themes.

To add new themes, select ‘Add New Theme’ button.

3. We will see a lot of available themes. You can select your choice of theme  
or you can click ‘Upload Theme’ button to upload your own theme. Click choose file. 

  4.  For choosing theme in which are already available. Click Install and wait for the theme to be installed. Once installed, click ‘Activate’ for the theme           to  be activated in your website.