On my first BtW game I acted as a Gamemaster for a group of novice role-players: 4 middle schoolers and two of their fathers, one a physics professor and another a chemistry high school teacher. So, not your run of the mill game group :)
Anyway, I went for a simple sandbox campaign centered on a citadel simply known as "The Citadel" that guarded the "Savage Lands". These Savage Lands are a wide area that became deserted in the last war of "The Human Empire" against the orks and their kinds and it's supposed to be mostly inhabited by animals. So it's mostly forests, hills, rivers, wolves, deer, bear and all that sort.
However an honest trader in slave children (though he's not allowed to trade that in "The Citadel" is OK in the Empire) and other wares loses one of his caravans to goblin raiders. The PCs are then asked to recover the lost goods for a share. Having nothing better to do, they agreed.
The adventure takes you, through some clues, to a ride on the Savage Lands and then discovering a cave complex that serves as base for our lovely greenskins.
I chose to write the Character Sheet using pen and paper, instead of printing the whole thing because I wanted to show the kids they were perfectly able to do this by themselves. I restrained myself in another ways and did not bring a whole load of tables from other sources, as I usually do (just the Mythic Game Master Emulator) and in general went for a simple game.
I made use of the scenario pack on goblins, though, but that was transparent to them.
As for the kids they picked up the rules fast enough even though if they were a bit restrained at the first scenes (I suspect that's due to the Parent Effect :) ) but then went on happily and just loved the dungeon, which was simple, but magic to them.
Speaking of magic, they made very creative use of Cantrips, specially of illusions. I was a bit soft on allowing the same illusions having the same effect on the same monsters, but heck it was their first game. I did increase the difficulty of the dice roll as they kept doing the same trick, yet one had a very high INT stat and had a very good dice day so...
They also loved the character creation process and how they ended up being friends to each other and the stories that were developed in the process.
All in all a great first game that would be warmly remembered.