https://www.listendata.com/2016/08/dplyr-tutorial.html
https://stats.idre.ucla.edu/other/dae/
https://topepo.github.io/caret/index.html
https://www.youtube.com/watch?v=UzxYlbK2c7E&list=PLA89DCFA6ADACE599
http://neuralnetworksanddeeplearning.com/index.html
https://selfdrivingcars.mit.edu/
https://www.tensorflow.org/tutorials/representation/word2vec
https://skymind.ai/wiki/word2vec
https://www.kaggle.com/dansbecker/learning-materials-on-kaggle
https://www.kaggle.com/hiteshp/head-start-for-data-scientist