SharePoint Content Types is a bit like using CSS for a website ‒ you only
have to change in one place.
Content Types were introduced in SharePoint 2007, and in SharePoint 2010 the
use of Content Types as the basis for building page layouts was front-and-center
in SharePoint Designer 2010.
Unfortunately Microsoft has taken a step back in SharePoint 2013, when it
comes to Content Types. They are still relevant, but they are more hidden
and not as easy to start working with.
Here Peter Kalmstrom, CEO of kalmstrom.com Business Solutions and Microsoft
certified SharePoint specialist and trainer, explains how to get around some
of the initial hurdles. He is using the Office 365 version of SharePoint 2013
for this tutorial.