Really none. The game walks you through rolls and what each thing does.

Having a little knowledge of how D&D works only serves to make the leveling up process go quicker since you have ideas on how to allocate stats or what specialties you take without reading through everything.

I didnt even know the league was still around. After it went to youtube instead of twitch its like it fell off the map

Wait, everyone bailing at the last moment is not how one plays DnD?