Firstly, you're in the wrong secton.
Secondly, you only need to choose an OS on your hosters site. I recommend using the latest version of FreeBSD, should be 11. 10.X should be ok too, but don't choose 9.3.
Then you need to backup your serverfiles. You can do it with this command here:
Code:
tar -cvzf directory_backup.tar.gz path_to_the_directory
Example:
Code:
tar -cvzf game.tar.gz /usr/home
After that you can paste your backup on your VPS, using this command:
Code:
tar -xf my_backup.tar.gz
It's not allowed to post links to other boards, but I send you a PM to a simple tutorial.