Theres a lot of tutorials and code snippets at the top of the Epik Forum here – https://appfinite.com/forum/epik-theme-support/ – Top Yellow Highlighted Sticky Posts.
That will cover exactly how the homepage is setup.
For the columns page, it’s pretty much setup the same way as all Genesis Themes are, so you can duplicate it by following this from SP – http://my.studiopress.com/tutorials/content-column-classes/ You won’t need to add the css since it’s already included in your stylesheet. But the HTML code will work fine.