I made my own care sheet, but here's a general idea of what new pet owners should know:
DIET: quantities and safe / unsafe foods
HEALTH: recommend vet(s), how to check for health issues, home remedies
GROOMING: how to properly trim nails and groom coat
BONDING / SOCIALIZING: how to introduce new rabbits to your home
SUPPLY CHECKLIST: everything you need to get started
HOUSING / ENVIRONMENT: indoors vs. outdoors - pro's and con's
BUNNY BEHAVIOR: understanding your bunny's body language
LITTER BOX TRAINING: tips and tricks to be successful