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.

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