Drupal Views: Create 3-Column Home Page with Taxonomy Terms
You can do that easily with your bartik theme.
You can use Panels and page manager with views.

It's not easy to use but it's worth it. There is a great screencast series in nodeone.se.

To be short:


In views: you'll make a content pane (not a block or page)
With panel you can retrieve all the information from this pane and choose your layout and where you want to put all your fields inside it.
In your case you can make 3 content pane, each one with a specific taxonomy. After that you'll choose in which columns you'll want to put them.