reading the book.
there's like multiple pages dedicated to just advice.
like "avoid random encounters"
Chat up your other players about what the party's gonna do that session
will you need to hire mercs because you're all thieves and clerics? do so, then.
pre assign your formation so you're not fumbling with it mid dungeon
assign a mapper [this shit works, it rules, its fun as hell do it, let a player map out the space as it happens]
IF IT SUCKS, HIT DA BRICKS
even if you're """evil""" you'll still be chummy for that session.
if you're good at the game then you can play more of the game.
im gonna start including shit like that, even if only a couple paragraphs of like "hey here's how to whip ass in LUMEN games, get ready."