Yay! I figured it out!
I am SO happy to say that I did this all on my lonesome. I didn't use a template already configured...I added the HTML coding in all by myself!!! I finally found a really great site that walked me through altering my HTML code to make a 3 column template. This site is really great and easy to understand. I've also found some great tips and such to help my with altering my blog in other areas, such as header & coloring your blog.