Graphics with ggplot2 Tutorial

A Detailed Guide to ggplot colors | R-bloggers

Draw ggplot2 Plot with Factor Levels on X-Axis in R (Example) | geom_line

Change Formatting of Numbers of ggplot2 Plot Axis in R (Example)

R Modify Major & Minor Grid Lines of ggplot2 Plot (Example) | Control Axes

Change Position of ggplot Title in R (4 Examples) | Center, Right & Vertical

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