Ker-splat to my Website

Woops, I slipped on something of a computer banana peel. See... I had these ideas of changes to make to my website, and I did the research (obviously not enough), went in and made some changes, and.....well.... slip, plop, klunk! I broke my website! and, I have no idea how to fix it. I think it's fallen and can't get up. So, for now it's just going to be out of commission until I get it figured out.