I will introduce some tutorials about some powerful R graphical display packages like ggplot2 which is widely used in the statistics community today. I would like to introduce some tutorials that I find very useful while my learning process. Moreover, I will share my own examples of R code and its corresponding graphical display based on my own research experience. Those examples are the ones that are not straightforward enough based on classical text book about ggplot2 which involved some tricks. I would like to share my learning process and my fruit to bring benefit to potential readers.