2018study-es DAY01 https://docs.google.com/presentation/d/1OUjXJaah0GPbb4Ib2yUOd888gvYaj9DJzYLTcXxvDe0/edit?usp=sharing DAY02 https://docs.google.com/presentation/d/1pzMLtAXs15fHfnuKjHDF8MXWJjg2RdITuNmrCtBoA2k/edit?usp=sharing