https://learner.coursera.help/hc/requests/new
http://www.dessci.com/en/products/mathplayer/
https://www.coursera.org/
https://www.coursera.org/courses
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https://www.coursera.org/
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https://class.coursera.org/datasci-002/class/preferences
https://www.coursera.org/uw
https://class.coursera.org/datasci-002/
https://class.coursera.org/datasci-002
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https://class.coursera.org/datasci-002/class/index
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https://class.coursera.org/datasci-002/wiki/OptionalRealWorldProject
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https://class.coursera.org/datasci-002/wiki/ClassVirtualMachine
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https://class.coursera.org/datasci-002/wiki/PythonResources
https://class.coursera.org/datasci-002/wiki/awssetup
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https://class.coursera.org/mooc/help/quiz
https://console.aws.amazon.com/elasticmapreduce/home
https://class.coursera.org/datasci-002/wiki/view?page=awssetup
https://github.com/uwescience/datasci_course_materials
http://pig.apache.org/docs/r0.7.0/piglatin_ref2.html
http://stackoverflow.com/questions/9900761/pig-how-to-count-a-number-of-rows-in-alias
http://km.aifb.kit.edu/projects/btc-2010/
http://km.aifb.kit.edu/projects/btc-2010/
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.33.44&rep=rep1&type=pdf
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.33.44&rep=rep1&type=pdf
http://uw-cse-344-oregon.aws.amazon.com.s3.amazonaws.com/btc-2010-chunk-000
http://uw-cse-344-oregon.aws.amazon.com.s3.amazonaws.com/cse344-test-file
https://class.coursera.org/datasci-002/wiki/view?page=awssetup
http://pig.apache.org/docs/r0.7.0/piglatin_ref2.html#DESCRIBE
http://pig.apache.org/docs/r0.7.0/piglatin_ref2.html