If you want to learn Data Science, start with one of these programming classes
David Venturi

Given how many of the new big-data frameworks (Spark, Kafka, Flink, etc.) are written in Scala, I would suggest that you consider broadening the scope beyond Python and R to include Scala. Python and R are fine as long as you never actually run into a really big data set. When that happens, it would be good for someone to have Scala under their belt as well.

Show your support

Clapping shows how much you appreciated Mark Lewis’s story.