The main ways that AI opponents work in tabletop games, and a how-to template for designing one of your own (video):

https://www.youtube.com/watch?v=kXrar73aUjs

A huge roundup of tips for becoming a better board game designer (video):

https://www.youtube.com/watch?v=EQ4XZpBD8Sc

Nicole Amato, games outreach lead for Kickstarter, discusses how creators can engage with the platform: building an audience, setting a project funding goal, considering shipping, canceling and relaunching, and more (video):

https://www.youtube.com/watch?v=xkVRY-r36Iw

Different player counts and the kinds of experiences that each tends to offer (video):

https://www.youtube.com/watch?v=l_ZDnvxKxn4

The ABCs of board game design (M-R): quick explanations for common terms used by board game designers (video):

https://www.youtube.com/watch?v=afmRjW6fINg

Jamey Stegmaier of Stonemaier Games answers lots of questions about board game publishing: production, distribution, building a crowd, digital games, and more (video):

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

Here are some design considerations for anyone making large-group games—ones for more than 5 or even thousands of players (video):

https://www.youtube.com/watch?v=Scpv2SIXapM

Thoughts on the different kinds of engagement that games can offer to players: choices and strategy, skill and execution, and self-expression (video):

https://www.youtube.com/watch?v=rih5SInTgOc