Your question is rather vague, I imagine you may get all kinds of comical responses. I would simply say a good place to start may be buying Hogans 5 fundamentals. I will tell you many feel this is the best way to swing a club, however I would add that trying to adapt to some of his ideas will certainly not be the "easiest" if you already have a different swing. My experience is that there is no "easy" way to swing a golf club "good". Only in time and by adapting will it become easy. I would only guess the easiest way to swing a club may in fact be the worst.
In the mean time, check out RBB's thread on the Hogan book, and this site may help as well for getting started.
http://www.golfonline.com/golfonline...rivatelessons/
Here is RBB's thread, rarely do I feel that many threads deserve a sticky, but I think this one contains a great deal of useful information, and is probably deserving.
My thoughts while I work through reading Hogan's Five Lessons