One of the challenges working in publishing is that the client often doesn't want to pay for fonts. This can be for several reasons. It can be expensive to buy new fonts for every new project. It can also seem a bit unnecessary when they don't have in-house designers that would make full use of the purchase. In schools there is also a demand for creative commons and be able to "mashup" and collaborate. All of these reasons can make it necessary to use freely distributed fonts for our design. Fortunately the quality and choice of fonts is increasing every year. Here is a link from the Awwwards Team on 100 of the greatest free fonts.
http://www.awwwards.com/the-100-greatest-free-fonts-for-2014.html