Set it up from the mythtv-setup in the computing screen.
Hi Zaerc, thank you for your answer. Sorry for being too vague, I'll try to explain all the details.
I roamed the forums and I saw suggestions of using mythtv-setup but to my surprise I from terminal I didn't find any myth execfiles. I tied typing "my" and then hitting TAB key to get all the mythtv exec files but I got none! I also tried with "sudo my" and "sudo myth" +TAB and also nothing.
Then I thought that maybe during the instal I failed somehow to install mythtv component.
That is why I tried to check this with "apt-get update" and then "apt-get install mythtv"
But I also got stuck emediatly with apt-get update showing me errors...
How can I check that I have installed all necessary mythtv files? Sorry for this lame question but I primarily use fedora and don't know the apt-get way of things so much