This book constitutes the proceedings of the 6th European Conference on Massive Open Online Courses, EMOOCs 2019, held in Naples, Italy, in May 2019. The 15 full and 6 short papers presented in this volume were carefully reviewed and selected from 42 submissions. Massive Open Online Courses (MOOCs) have marked a milestone in the use of technology for education. The reach, potential, and possibilities of EMOOCs are immense. But they are not only restricted to global outreach: the same technology can be used to improve teaching on campus and training inside companies and institutions. The chapter 'Goal Setting and Striving in MOOCs. A Peek inside the Black Box of Learner Behaviour' is open access under a CC BY 4.0 license at link.springer.com.