Hi there!
Welcome to WordPress.com.
Here’s how to set the layouts in Funki:
For a one-column layout, remove the widgets from the “Left” and “Right” sidebar. You can also set a one-column layout on a per-page basis by selecting the “Full-width” page template.
For a two-column layout, add widgets to either the “Left” or “Right” sidebar.
For a three-column layout, add widgets to both the “Left” or “Right” sidebar.
For information on adding galleries, see this support document: http://en.support.wordpress.com/images/gallery/
I hope this helps. Let me know if I can assist you further.