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R has a large community for support online and even built‐in documentation within the software. Most libraries provide documentation and examples for their functions and objects that can be accessed via the ? in the command line (e.g., type ?glm for help about creating a generalized linear model). These help documents are displayed directly in the console, or if using RStudio, they are displayed in the help panel with extra links to related functions. For more in‐depth documentation, some developers provide vignettes for their packages. Vignettes are long‐form documentation that demonstrates how to use the functionality in the package and tie it together with a working example.

The online R community is lively, and the people are often helpful. Searching for any question about R or its packages will often lead you to a post on Stack Overflow (https://stackoverflow.com/) or Reddit (either r/rstats or r/RStudio). There is also the RStudio Community (https://community.rstudio.com/) where you can go to ask questions about features specific to the IDE. It is rare to encounter an R programming challenge that has not been addressed somewhere online and, in that case, a well‐posed question posted on such forums is quickly answered. Twitter also has an active community of developers that can sometimes respond directly (such as # RSTUDIO or HADLEYWICKHAM).