wyardley said pretty much what I had to say, but I'll reiterate a bit. Gongfu brewing entails using much smaller pots than what you have, generally no more than about 4 or 5 oz with even 5 oz being a bit big. You then fill the pot 1/4 to 1/2 full with dry leaf, if not more, so that when the leaf is hydrated it fills the pot completely, though some/many of us generally try to avoid cramming. You then also pay attention to the heat - with many oolongs, especially the roasted ones, you keep it as hot as possible, and use very short steep times; often very quick steeps. This brings out a lot of the volatiles that generally become too dilute to really taste or smell when brewing in bigger pots with less leaf.
As far as what parameters to use, that depends entirely on the specific oolong you are brewing. Oolong is a big category with a vast array of types that range from very green to heavily oxidized and/or roasted, several leaves rolled into a dense little pellet to very light and fluffy, and so on. If you want to specify the type of tea you're brewing then we can certainly offer some help. I can say, however, that you probably won't want to try gongfu brewing with a large pot. It would probably require your entire bag/tin of tea and may still not produce great results. You might consider getting something like a 3.5 oz gaiwan that would be more versatile. Then when you know how to use it and know what teas you like best, then you can get smaller yixing pots to dedicate to those types of teas, you'll already know how to use them to their fullest, and the differences will be more apparent
Hopefully this doesn't sound too intimidating. The term 'gongfu' means "to do with skill" and does require skill to do well. However, even a novice can produce much better results than with western style brewing in short order, but then there is never any end to the improvement that can be made by refining your skill.
So in other words it's really not that hard, but it's something that you never stop learning to improve
With some additional information most people here will be able and willing to give you specific advice to help you get good results right away