Different onboarding exemples https://www.useronboard.com/onboarding-teardowns/ http://fr.slideshare.net/conradwadowski/growth-hacking-user-onboarding?ref=http://www.growhack.com/2013/08/20/the-best-in-user-onboarding/
Onboarding done right https://youtu.be/EbbjEY-TyhU?t=1891
