How can I make 2 column layout with Twitter Bootstrap?
I use this scheme:
<div class="container">
<div class="row">
<div class="span2">
Red rectangle
</div>
<div class="span6">
Blue rectangle
</div>
<div class="span6">
Blue rectangle
</div>
<div class="span6">
Blue rectangle
</div>
<div class="span6">
Blue rectangle
</div>
</div>
</div>
Which generates this layout:

I would like to have the blue rectangles always “on the right”, not left.
What am I doing wrong?
You might want to review the scaffolding documentation. It sounds more like you want rows nested inside your right hand column.
It might not actually be necessary to wrap each blue rectangle in a “row” div, with span6 they should stack. But its cleaner this way.