I want to change the layout of some nodes on my Drupal 7 site - namely to have the fields display across the page. In reading up on theming, they seem to be saying that in order to override node.tpl.php, I need to have my own them?
Is there a way of using an existing them (e.g. Bartik), but just simply overriding it for node layouts by using a custom node--mytype.tpl.php file?
In Drupal you can create a sub theme that extends another theme.