Arguably, typography is the most important element you need to get right. The web these days is still 95% typography: and while I can't prove this figure, I'm sure it's a good approximation. Just look at your own website, or at Facebook for instance: it's all about text.
Whatever you do, whether you're a content creator, a marketer, a developer or a designer, the way you present your text is essential to the success of your projects.
This short course touches on all the essentials you need in order to make sure your typography is always understandable and accessible, as well as elegant and appropriate.