you should follow this steps carefully and be sure doing it the right way.
downloading and extracting files and you will get a copy of ( marocms ) script containing these folders :
go to this path application/config/database.php file and start editing, then place your hostname, username, password and database as you see in picture.
congratulations, Now you got the script up and running
<iframe src="https://www.youtube.com/embed/8OVOCNiCIog" width="100%" height="400px"></iframe>
if you need a professional to install it for you for just $5, just contact us at firstname.lastname@example.org with your purchase no.