Find a llama in a savanna or mountains biome
Hold wheat or hay bales to get its attention
Right-click or tap the llama to mount it
Keep trying to mount it until hearts appear
Wait for the llama to stop bucking you off
Once tamed, open its inventory if needed
Use a carpet to customize its appearance
Use a chest on a tamed llama to give it storage
Lead it with a lead if you want to move it around