I recently took the tutorial on shiny by Garret Grolemund (we were classmates at Rice!), and found it to be a very thorough tutorial.
If you aren’t familiar with Shiny – it is a way to create web applications using just R (without HTML knowledge). R sort of “translates” to HTML and creates a web page. You still have to be pretty proficient at the R language though.
Email me if you are interested in the R code, or just enjoy the interactive app!