Maybe he'll be so special in his biting ways that you'll have to keep him. lol
I love the second pic, btw.

Do you think that I should wait a while to start training or not?

Wait maybe 1-3 days just to let him get acclimated to the new enviroment and new sounds. But start soon so he starts to trust you early on and doesn't begin to develop a huge fear or dislike for you because you ignore him. Today would be good because you don't have school and you could spend more time taming him

He seems very acclimated. He took a drink of water with my hand in the cage. And I have hebrew school which sucks.

Ok. Cool.

What a little cutie, I would just start slow with him, millet in your hand in the cage, let him associate your hand with a treat.

nice I wish I had a tiel I would use the millet like a treat.

Well, I took him out and with some minor bites, he stepped onto my hand. He would stay there for a while but if I moved my hand AT ALL he would attack it while he was still on it.

Well that's progress! He's just still unsure of you.

he must be a little scared of your hand try feeding him millet.