There was a New York Times article on the growing popularity of R as statistical software: Data Analysts Captivated by R’s Power. I think it’s a little misleading because while it is extremely versatile for all sorts of statistical analysis, it’s not necessarily the most powerful tool, especially if you compare it to other programming languages, which process data more quickly. That being said, I do like using R, and its syntax feels really intuitive to me.
I also found a post on Andrew Gelman’s blog on good programming habits in R: Style guide for R code. I don’t follow a lot of these guidelines, although I really should.
While looking up how to implement generalized linear models (GLM) in R, I came across this really useful resource: Generalised Linear Models. I think the site also has links to course materials on other statistical methods as well.