Find a bee nest or beehive with bees inside
Wait until the bees leave the nest or hive
Use a campfire under the nest or hive to keep bees calm
Harvest honeycombs with shears to make the bees stay inside longer
Break the beehive with a Silk Touch tool to pick it up with the bees inside
Place the beehive in your base
Keep flowers nearby so bees can enter and exit
Lead bees with flowers if they are outside
Breed bees with flowers to increase the number of bees
Make sure the beehive has enough nearby flowers for bees to use