Tip: Before uploading the theme make sure you unzip the theme package downloadeded(All files & Documentation) from ThemeForest and inside of the unzipped folder upload the zip called “capital.zip”
To install this theme you must have a latest version of WordPress already installed. For information in regard to installing the WordPress platform, please see the WordPress Codex – http://codex.wordpress.org/Installing_WordPress
Installation
When you are ready to install a theme, you must first upload the theme files and then activate the theme itself. The theme files can be uploaded in two ways:
FTP Upload: Using your FTP program, upload the non-zipped theme folder into the /wp-content/themes/ folder on your server.
WordPress Upload: Navigate to Appearance > Add New Theme > Upload. Go to browse, and select the zipped theme folder. Hit “Install Now” and the theme will be uploaded and installed.
Once the theme is uploaded, you need to activate it. Go to Appearance > Themes and activate your chosen theme.