Learning programming, maybe, maybe not. But I have had success being like "assume I already know Ruby, Python, JavaScript, and Haskell. What are the quick pointers and cheat sheets for using R, especially the ggplot2 library"
I could read an R tutorial, but I don't need to learn about variables and what comments are or how to call a function. I just want to know the differences between what I'm already used to.
And I'll admit it was useful to already have that context to throw follow-up questions into when they came up, like "what's the difference between = and <-" which are famously hard questions to Google