Copy your wp-config.php file somewhere to your computer to have a backup o your database data just in case, and after that rename it to something else.
Install WordPress on your site root folder. The detailed procedure of it you can find here http://wp.tutsplus.com/tutorials/wp101-training/beginning-with-wordpress-installing-wordpress-manually/
Download the installer file using download links from ‘installer-files.txt’ file, provided within the ‘Import’ /’Duplicator’ folder of your theme archive.
Copy the downloaded installer files
52453761048983069_20130927_secondtouchtheme_package.zip
and
installer.php
to your site root folder.
Copy your wp-config.php file somewhere to your computer to have a backup o your database data just in case, and after that rename it to something else.
Open your site in the browser like this: your.site.name/installer.php
Start entering your database data, which you can find in your copy of wp-config.php file
Click ‘test connection’
Check ‘I have read all warnings and notices’ and click ‘run deployment’ and ‘ok’
Next step is creation of a new admin account. Click ‘new admin account’ and enter your login and password. After that click ‘run update’.
After that click ‘delete installer files’
Enter your new login and password (By default: admin password)
And visit site to see the result
Turn back to the previous tab and resave permalinks
The theme is installed !