It should provide a nice head-start to know how the ggplot package of R works, or alternatively, a nice click and interactive interface to make nice plots.
In the last few weeks, I have been working on my first public Shiny app. I have been working a bit with R lately and was interested in trying its internet interface. The objective was to decress the entry barrier to R and ggplot to some of my colleagues while keeping it interesting, so I decided to create an app that showed side-by-side a plot with the important code sections relevant to make it plot possible.
The app was well-received, even by the publishers of the original idea, and the overall feedback has been positive, so I am sure that updates and new apps are coming in the near future :)
Please let me know if you use it, if you find it useful, if you find something is missing, or any other kind of feedback.