Hi Zuheir,
No worries.
You will need to get access to the server console or be able to open a terminal on the server (usually thru SSH).
If you are using a VPS, you should be able to get SSH access to it. Once you get SSH access, you will be able to follow the instructions on the installer.
Perhaps, if you are not familiar with unix commands, try to see if you can get someone that has experience on unix to help you out as it might be a bit daunting for a newbie
Thanks,
Ernie
Posted by Ernie Ghiglione