Since version 1.0.4, Precia has provided 3 "about template" styles to help you there are multiple solutions to present your business.
To create an about page, just go to Online Store > Pages. When you are editing the page, just choose the template is one of "page.about1", "page.about2", "page.about3".
Each about page template display the correspoding "about" section. To edit "about" section, just go to Online Store > Customize. Choose about page you created. Then click "About" section on the left and edit it.