The basics of prototyping, playtesting, and developing tabletop games (video):

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

How to make a game that doesn't just work mechanically but is also a lot of fun to play (video):

https://www.youtube.com/watch?v=mVXqi1pyTqw

How to fulfill a crowdfunded project: an overview of finding a manufacturer, booking freight, clearing customs, and actually fulfilling orders (video):

https://www.youtube.com/watch?v=R_Jdk123g5U

Simple actions you can take to advance your board game design plans right now (video):

https://www.youtube.com/watch?v=h7FDQRJEFeo

“Don’t waste time creating nice card or board designs. Make something functional and test it. The game will go through so many stages that everything you created at the beginning will probably be discarded or modified so much that it will be more work to update than to remake.”
— Roberto Pinheiro

How to design a deck-building game (video):

https://www.youtube.com/watch?v=7-v3Oj9ofFc

Should you ship your own crowdfunded project? Pros and cons of doing it yourself (video):

https://www.youtube.com/watch?v=xgSf8BeRy5s

8 things pretty much every board game publisher is looking for in a game (video):

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