There are many more resources for learning R, given that the language is older. These resources have become much better in recent years and I think there has be

There are many more resources for learning R, given that the language is older. These resources have become much better in recent years and I think there has been no better time to learn R. Probably the best introduction to data science in R is Hadley Wickham's latest book: http://r4ds.had.co.nz http://r4ds.had.co.nz Learning your second language is much easier than learning your first. You'll be more familiar with programming concepts and terms that make it easier to search for how to do X in that language. Julia is still relatively new and not quite ready (in my opinion) for new programmers. Things change relatively quickly and I think that could add a lot of confusion that gets in the way of learning. That being said, I think Julia is a pretty great language. I really love the way it has grown and I'm excited to see how it matures.