 Since so much of modern biology requires the ability to read phylogenetic trees, good guides are commonplace. This includes journal articles (e.g., Baum, Smith, &amp; Donovan 2005; Baum 2008; Yang &amp; Rannala 2012), online guides (e.g., Understanding Evolution,  Other Internet Resources),  and more comprehensive textbooks (e.g., Felsenstein 2004; Lemey, Salemi, &amp; Vandamme [eds] 2009; Wiley &amp; Lieberman 2011; Baum &amp; Smith 2013). Here, we provide only a brief introduction, but recommend any of these (among others) to readers looking for a more thorough and technical introduction.