The photo on the right gives you an idea of what a matted print looks like.  You can frame your print with or without a mat.  Just make sure that your print fits a standard size frame.  Pre-cut mats are sold at art and frame stores.  You can get a mat custom cut at a frame store.  Be familiar with standard size frames such as 8 X 11, 9 X 12, 11 X 14, etc.  I recommend using standard size frames & Mats because they usually cost less.