How much playtesting should a board game designer reasonably be expected to do for a design? (video)

https://www.youtube.com/watch?v=KmoT3OxF_6A

Game designer Daryl Andrews on attending conventions, pitching to publishers, taking feedback from playtesters, and more (video):

https://www.youtube.com/watch?v=UZC0Cqk-XHc

Sell sheets for board game designs: what they are, when you’ll need one, and what should be on them (video):

https://www.youtube.com/watch?v=0V6yStmncVM