Side Questions: Remove from Homepage and Full Width Image

First off, we absoluletly love the Barletta theme. We have been using it for a while now over on Traveling Appetites.

We are in the process of adding a sidebar and have two questions:

1. How can I remove the sidebar from the homepage?
2. How can I make the sidebar appear <i>after</i> the feature image on a blog post? Right now the sidebar takes up width that the feature image should be using.

If you can point me in the right direction in the PHP code I can probably take it from there.

Thanks in advance,
Joe