If you want to use R programming to create plots and graphs using the ggplot package, then watch this video. In this video, I'll go though how to visualize two numeric variables and one categoric variable using line graphs and faceting with ggplot2 (which is a part of the tidyverse set of packages). This is an R programming for beginners video. Good data visualisation and descriptive statistics is the first step in data analysis. If you want to learn statistics and quantitative analysis, then this is a great place to start.