Pork belly == bacon, essentially. There's a bit more complexity than that, but for your purposes, yes you tried to cook a huge lump of bacon after trimming the fat. Normally to cook pork belly, you wash it, dry it, and cook it however you cook bacon (not microwave). The resulting meat should be crisp on the outside, flavorful, and fatty as all hell.

I'm not a big fan of pork belly, for that reason. Lately it is kind of a hipster food thing, don't really understand why.