Hello, dear colleagues around the world.
Please I would like you to help me.
 
I know that here you are    is correct.
 
BUT
IS IT CORRECT IF WE SAY.
 
Here you have your keys   or here are your keys
here you have your pisco sour  or here is your  pisco sour.
 
How do you say in Spanish this two sentences:
 
1. I get used to studying  in the evenging.   (the process of becoming normal)
2. I am used to studying in the evening.     (something is normal)
3. I got already used to working 12 hours per day. 
 
THANKS A MILLION IN ADVANCE.
THANKS FOR YOUR HELP. 
 
CHARITO 
from Peru