R Draw ggplot2 Plot with Lines & Points (Example) | Add Scatterplot Line

Graphics with ggplot2 Tutorial

A Detailed Guide to ggplot colors | R-bloggers

Change Color of ggplot2 Boxplot in R (3 Examples) | Set col & fill in Plot

Add Text to ggplot2 Plot in R (3 Examples) | Annotate Elements to Graphic

Set Axis Limits in ggplot2 R Plot (3 Examples) | Adjust Range of Axes

Combine Two ggplot2 Plots from Different Data Frames in R (Example)

Draw Multiple Variables as Lines to Same ggplot2 Plot in R (2 Examples)