The same instructions as in the tutorial stand... Take whatever makes up a block for your theme, replicate it, and add the calendar code to it.
In your case, it would seem that a bloc consists of
<div class="t"><?php _e('Categories', 'kubrick'); ?></div>
So, figure out where you want the calendar to appear, then paste this code in the proper spot to add a block to your template, and then adjust the title and the content of the block.
I'm guessing that for your theme, this would be the equivalent of the title <?php _e('Categories', 'kubrick'); ?>
And then the content would be inside of the art-BlockContent-body div.
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