My blog at http://www.musicalgeometry.com uses the Barthelme theme which is a two column theme with the sidebar on the left.
I want to add Google Adsense and I would like it to display as a skyscraper to the right of my content, essentially making my blog have three columns.
I would prefer to add Adsense by hand right now. Once I understand how to do that I will look into plugins.
How would I go about creating a third column just for Adsense?