The Tidyverse is under development and it can be tough to keep up with the changes or know where to start (e.g., plyr vs dplyr, melt vs pivot_longer). However, ggplot2 is based on a pretty solid theory of graphics (Bertin's visual variables and Wilkinson's grammar of graphics). These can take some time to get into but it's not magic once you get the idea that you're mapping data variables to visual variables.