Frustration floweth over!

I am so stinkin' frustrated.  I was trying to experiment with creating a 3 column blog...then I was checking out the new design tool.  To make a long story short(er)...I ended up with crazy formatting and all of the info on my sidebar is gone!  AHHHHHHHHHHH! I don't even know where to start....It's late so I will tackle this tomorrow.  Anyone have any good ideas for me? Help!