1) To begin with, set up a commerce chat (optional) at Commerce
For best results, keep that independent of the game
Useful websites
D&D Beyond (character sheet)
Owlbear Rodeo (Maps)
Monsters 5e (for monster stats)
2) Instructions for the AI Game Master (player-controlled combat)
or
Instructions for the AI Game Master (Revised & Expanded) (ai controlled combat)
3) Campaign Details (at this point I only have one, follow link to campaign set up)