Tips for Stellar Etiquette
When in space, always wear your best spacesuit to dinner parties. You never know when an alien will invite you to play a game of "Galactic Twister" with their G'Nightian cousins.
Don't eat the last of the G'lunkian Gloopernuts without offering some to your fellow space travelers. It's just good manners, folks.
When addressing an interdimensional dignitary, use their preferred method of contact - either by thought wave or subspace carrier pigeon.
Remember, in a universe full of infinite possibilities, the only thing that matters is your impeccable intergalactic etiquette.
Etiquette for Dummies - A beginner's guide to not being a space cadet.
Etiquette for the Gods - Advanced techniques for intergalactic social climbers.
Etiquette for the Rogue - A guide to being a space-faring outlaw.
Intergalactic Dating Etiquette - Because love knows no boundaries - or does it?