Column question Wordpress Evolve

Hi everybody,

first of all i want to appologize for my English. I’m busy with a wordpress website for a friend of mine. You can find it here. This website is based on the wordpress theme Evolve. In this theme you can change some nice design settings like the 2 column page layout. This is what i prefer on almost every page. exept the homepage. As you can see the homepage is in 2 columns and i prefer 1 column. and i prefer 2 column layout for the pages with the posts.

Can someone help me please?

My php knowlage is allmost zero. sorry for that.
If somebody needs more information? let me hear.

Thanks in advanced.