In a large bowl, I placed 8 cups of almonds and covered them, 2-3 times the amount, with water. I left them on my counter top overnight.
Sprouted almonds don't produce a "tail" or noticeable sprout after soaking. They do swell up, though. See?
I took my almost overflowing bowl over to the sink and dumped them into a colander. I gave them a good rinse, too.