Jason and Travis talk about how they teach kill team to new players, as well as player placed terrain vs fixed terrain, and speculation around upcoming tournaments.
Example mission packet, the mission packet from LVO:
https://docs.google.com/document/d/154UY3TrhPgbK5H8q6ZPwZBFKn5YEotG1wiBwFt5UeAA/edit?usp=sharing
Ace's Goonhammer article on terrain:
https://www.goonhammer.com/terrain-101-making-good-competitive-tables-for-kill-team/