I has to be said there are loads of past threads asking the same question. The TIG section is full of them. Start by reading up on the functions, what they do, and how they effect each other. TIG is so different from MIG in that you need to control the distance from the work piece with both wire and tungsten. So once you understand the functions I would suggest concentrating on keeping the tungsten a constant distance from the work piece, so leave the filler wire alone for now. Take a peice of CLEAN sheet steel and practice just that.
While reading up on the functions practice feeding wire, through your hand, a length wire 500mm is good as any longer and it waves about too much. That way once you have mastered tungsten distance you don't have to master feeding the wire.
Add the two together and you will find it a lot easier
Have read through the TIG welding tutorial and the TIG welding FAQ, and a good read through the tig forum, there will be plenty there to get you started, then find yourself some 2 or 3mm thick material to practice on before you move on to thinner stuff, turn off the pulse features on the welder at least initially, they just add another level of complication while you are learning,
Then any more questions ask away, and take some photos of you progress, its much easier to give advice if we can see what you are doing.
In the beginning, don't practice more than 20-30 minutes at a time. Try to get a go at it every evening. Start on the cheap stuff that you can dig out of a scrap bin that is not rusty. Get your feeder hand in motion on the couch watching telly. Be sure to bend the back of the filler rod or change seats with your missus to ensure that you don't poke her in the eye with the filler rod.