Hello,
I would like to know how I leave only my home page with a column only (content column), I want to get the <aside> from the left (admin block).
The only way I could get any closer was to change the columns3.php file by putting a span12 in the div of the content, which made it occupy every layout by throwing <aside> down. But I think it's not right to do that right?
Do I have a choice?
How
Howwouldyoulike 
I found the solution:
Just point to config.php which php file you want to use on this page, then you can customize this file the way you want.
In my case it looks like this:
// My dashboard page.
'mydashboard' => array(
'file' => 'frontpage.php',
'regions' => array(),
'options' => array('nonavbar'=>true),
),
I used the dashboard which is the screen that you are directed after the login the frontpage.php file but I can create another .php file and programmer the way you want.