smallbiz sidebar errors

Hello everyone, I am new to wordpress and have little knowledge of html and web building but have been doing ok until now. I was setting up my site and was trying to add the facebook “like” box into my sidebar. Once I added it, the sidebar went from the side to the bottom of the page, under the main content. I thought this was because the facebook box was too wide for the sidebar but after deleting the code i entered it is still there. It looks as if it has somehow been moved over into the main content area. I did not back up anything because I didnt think I was really doing anything I could mess up. There are two parts to the code, one part I was adding to the top of sidebar.php and the second half i added to the sidebar via the text/html widget on the widgets tab in wordpress. any ideas on what is causing this and how to fix it? I will paste the sidebar.php code below. thanks.

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