Di-Tech Challenge is organised by the Didi Research Institute: http://research.xiaojukeji.com/competition/main.action?competitionId=DiTech2016
Source data: https://onedrive.live.com/redir?resid=2B77E0CCB6AC222C!11043&authkey=!AI3A2FLUC6TFxEM&ithint=folder%2c
Machine Learning course at Udacity: https://classroom.udacity.com/courses/ud120/
Good luck! 🙂