Join Morten Rand-Hendriksen for an in-depth discussion in this video Beyond Twenty Thirteen, part of Start with a Theme: Twenty Thirteen.
Now you know what you can do with 2013, and how you can use it's customization settings and post formats to display your blog content in an appealing way. I bet your next question is, how to change the default color scheme of the theme. Right? You can do this in a couple of different ways. If you're on Wordpress.com you can get the custom design upgrade which allows you to add new colors and fonts and even edit CSS. If you're using a self hosted work press site you can get these same CSS features, through the Jet Pack plugin.
When it's activated, it will appear under Appearance and Edit CSS. And from here you can enter your own cascading style sheets code that will override your current theme. But my recommendation is to create a child theme. Any time you want to customize an existing theme with code, use a child theme. So when you're ready to start tinkering with the colors, fonts, or other elements in 2013, go check out the WordPress: Building Child Themes course. Right here at the lynda.com library. Yes, it focuses on the 2012 theme, but, the techniques used in this course can be used in 2013 to change any element in the template to do and look the way you want them to.
Now you know 2013. All that's left to say is start with a 2013 theme and see how it can work for you.