I’d like to create a 3-column page (fine, can do that) and then, in Wordpress, I want to insert a shortcode into each of the columns.
@paulzz I would have thought either directly in the content area in the Wordpress text editor or widgetize these areas and add it that way within the Wordpress admin area. And if you’re in the mood for some serious reading then have a look at this article on SmashingMagazine’s site “Wordpress Shortcode Complete Guide”.