Arbor is an R software package that can be used to build workflows for phylogenetic comparative analysis. This tutorial set showcases how to use Arbor and how to run analyses using Arbor. Common analyses for which you can use Arbor include: phylogenetic signal, ancestral state reconstruction, independent contrasts, comparative model fitting, PGLS, fitting birth-death models, community phylogenetics, BiSSE/MuSSE/QuaSSE/GeoSSE, and cospeciation. Click here to begin!