Introduction video about the urgency of an agile mindset: https://www.youtube.com/watch?v=_GLlXD8GyNY
Scrum in two minutes: https://www.youtube.com/watch?v=1PBln3dyaPs
Scrum in seven minutes (a lot of extra explanation): https://www.youtube.com/watch?v=9TycLR0TqFA&feature=youtu.be&list=PLdreAkCoZOpkG-Lz_Mq4-oJARZLVXzToH
Understanding the product owners role: https://www.youtube.com/watch?v=502ILHjX9EE&feature=youtu.be&list=PLdreAkCoZOpkG-Lz_Mq4-oJARZLVXzToH
Liquid development (“minimum viable product”): https://www.youtube.com/watch?v=0P7nCmln7PM&index=20&list=PLdreAkCoZOpkG-Lz_Mq4-oJARZLVXzToH
Great read about the basics of scrum: https://www.atlassian.com/agile/scrum
And the scrum guide: https://www.scrumguides.org/