You can follow a designer by clicking on the blue "+ Follow" button on the upper right of their banner image on their store page! Following designers is a great way to stay up to date on great new designs on TeePublic.
When you follow a designer it means you want to keep up with their work on TeePublic. Likewise, when someone follows you, it means they want to see more of your designs!
To see the latest art from designers you follow, hover over the “Browse” button on the homepage menu, the click “Following” at the bottom of the dropdown menu.