I'll be moving out in about a year so I will finally get a wired connection to my pc (which I have still yet to purchase lol). Before I do that, I want to read up and learn about duelling, particularly cpm duelling because that's the mode I want to play most.

What's the best resource to learn about the basics of quake duelling? Things like aim, item timing, positioning, spawns etc? Can people give me links so I can learn how to get a lot better (I am utter dogshit at quake as it stands) and the time investment required to become 'good enough' at duelling?