And (despite years of hearing 'content is king') that means the use case is as important as the nature of the content when making design decisions.
Infographics aim to tell you or teach you or make you think about something in an easy, natural way. You just look at a picture, instead of reading or listening or working through problems or pages.
This is a nice "hundred years of usability" piece from people that know a lot about the subject. I only have one issue with it. It's horizontal. Which works if you're getting it as a physical poster (and they have a link to purchase one). And I think the physical poster would be a great addition to office space or a classroom.
Horizontal infographic from www.measuringusability.com
Here's one (similar style, from the same site) that works better onscreen. Because it's vertical.
Vertical infographic from www.measuringusability.com
What's my point?
Usability starts with a use case. If your user is being encouraged to hang something on his wall, that suggests one way to design the product. If the expectation is that they'll view it on a monitor or phone or tablet - that's another.
Content may well be king, but the use case is the power behind the throne.