Different techniques for different people, there isn't one that I can call the easiest. Check out the tutorial section, and search through the on-topic section for WILD threads. There's a lot of good information out there on different techniques.

Some notable ones you might want to check out are BillyBob's WILD technique, and KingYoshi's WILD technique. They are pretty popular on here, so I'm assuming they work for a lot of people. Once you practice WILDs for a while, you'll begin to figure out what works best for you, and possibly draw on a multitude of different techniques to create your own custom one.

When starting out, I suggest coupling the technique with a WBTB as well. Should make it a lot easier for ya.