New Tutorial Providing an Introduction to `ggplot2`

Although R provides built-in plotting functions, ggplot2 has become the preeminent visualization package in R. ggplot2 implements the Grammar of Graphics theory making it particularly effective for constructing visual representations of data and learning this library will allow you to make nearly any kind of (static) data visualization, customized to your exact specifications. This intro tutorial will get you started in making effective visualizations with R.