This panel discussion featuring game designers and developers covers the difference between design and development, how they incorporate narrative into games, and where they draw inspirations from (video):

https://www.youtube.com/watch?v=-FaAwCn2eDM

Board game design basics: defining your goals, restrictions, the iterative design process, qualities of good games, taking feedback, and more (video):

https://www.youtube.com/watch?v=AAiCR1XVe68

James Ernest on the stages of tabletop game design, from workshopping an idea to delivering a final prototype, and the importance of learning to throw away everything that isn't working (video):

https://www.youtube.com/watch?v=fXWlJYR2F6g

A framework for better understanding the various elements of your game and which aspects are likely to connect with publishers and players (video):

https://www.youtube.com/watch?v=ejkbIWErmo8

The fundamentals of game design, taught by walking through the process of creating a new tabletop game (video):

https://www.youtube.com/watch?v=2tXjLK6oVA0

A strong hook is important for getting publishers’ and players’ attention. Here’s a process for coming up with strong game hooks (video):

https://www.youtube.com/watch?v=vUtTt_rwWaw