We don't really know anything about Linux.
What is the recommend version of Linux for a server for working with Moodle.
I've found Ubuntu server which says it was built on Debian, but that really isn't helping me. I've seen the Moodle docs page http://docs.moodle.org/en/About_Moodle and all it says is 'for example, red hat or Debian'. Not really helping such a complete Linux novice.