hellooooo
want to teach your dog real fast?
this is what i learned from the professional dog trainer.
use your leash with the commands.
i think you got "sit" already, so here is down and stay!
from sit position, have a treat in your hand and gently guide your dog to down position as you lower your treat and leash together.
when down, say good girl/boy with upbeat tone!
and give treat!
if your dog "plays" along with you and associate the movement with the word "down". Say "down~" and lower the leash and treat.
repeat about 5 times at a time. about 3 times a day.
your dog now knows "down"
here is the trick: make it a game don't make it boring.