Use "already" to talk about something that happened more quickly than was expected:
He just bought it two weeks ago and it's already broken!
"Already" can go in a few different spots in a sentence. It can go before an adjective:
Don't tell me you're already tired.
Or it can go at the end:
I'm tired already.
It sounds a bit strange to put it before "are" or "am", although "already" can go before most verbs:
I already spent all of it.
You already took one, didn't you?