Making your prototype more appealing for pitches through stock art, example diagrams, decent components, and a how-to-play video:

https://randomskill.games/so-you-think-you-can-be-a-board-game-designer-part-5-presentation/

A massive guide with basic info on all sorts of marketing platforms and techniques for board games:

http://atgn.com.au/designers-dangers-103/

Free illustrations of black people for digital projects or board game prototypes:

https://www.blackillustrations.com/

6 ways of using randomness to spice up a game design–without overseasoning it:

https://subsurfacegames.ca/2020/06/06/when-to-use-randomness/

Julio Nazario and Jason Slingerland discuss rules documents (audio):

http://www.buildingthegamepodcast.com/episode-418-julio-explains-the-rules/

Design choices and challenges with Richard Garfield (audio):

https://player.fm/series/magic-the-gathering-drive-to-work-podcast/ep-737-richard-garfield

10 brand extension strategies for tabletop games:

https://stonemaiergames.com/10-brand-extension-strategies-for-tabletop-games/

4 lessons from Imhotep for aspiring board game designers:

https://brandonthegamedev.com/4-lessons-from-imhotep-for-aspiring-board-game-designers/

Tips for making an immersive game through world-building, art, characters, and more:

http://atgn.com.au/designers-dangers-102/

Industry leaders discuss the effects of the COVID19 pandemic on the tabletop games industry (audio):

http://www.buzzsprout.com/46339/3957179-covid19-and-the-tabletop-games-industry-with-justin-jacobson-and-ben-harkins

Follow your passion, use your personality and find success on social media (audio):

https://breakingintoboardgames.libsyn.com/breaking-into-board-games-episode-119-danny-quach

Industry insight from a full-time developer (audio):

https://breakingintoboardgames.libsyn.com/breaking-into-board-games-episode-117-john-brieger

“Scoring is what incentivises different behaviours. So, to a large extent, your scoring system IS your game. A good scoring system can provide a higher skill ceiling, differentiation of skill, reward interesting/fun play, tension of risk/reward, and real meaningful choices.”

— Bez

How heuristic evaluation can improve your game design (audio):

https://ninjavspirates.libsyn.com/who-what-why-s22e04-let-me-learn-you-something

The difference between novelty that comes from original concepts and novelty coming from variety–plus ways of increasing replayability:

https://justingary.com/2020/05/05/the-lost-chapter-think-like-a-game-designer/

“Most strategic games are about decisions, and when you decide to do something you’re also often deciding not to do something else. And there is a cost there, and that cost is often not appreciated by some designers.”

— Tom Lehmann

A repository of millions of icons, many of them free:

https://www.flaticon.com/

The 10 Minute Design Challenge is a great exercise for quick thinking and creativity:

http://10minutedesignchallenge.co.uk/

Here’s a video explaining how it works:

https://youtu.be/E3_KhFZZ93c

What makes a racing game a racing game? (audio)

http://dicehateme.com/2020/05/the-state-of-games-ep-173-the-one-about-rockets-and-racing/

What designers should expect from publishers—and vice versa (video)