My S5 froze

Welcome to AC :)
Going to start with the obvious. Have you done a battery pull on your device and rebooted it?
 
not sure how to open the new phone. (I am very green using this phone)
It's fairly easy. Just pull of the back (battery door) and pull the battery. There should be an opening where you can use your finger to just pop it off.
 
My phone just froze up. Nothing on it works. how do I fix it?

How did you put the battery in when you got it?? and your sd and sim etc? take off the back cover and the big thing that says samsung and some text on it is the battery to pull it out and put it back in and put the back cover on again and turn it on :)
 
How did you put the battery in when you got it?? and your sd and sim etc? take off the back cover and the big thing that says samsung and some text on it is the battery to pull it out and put it back in and put the back cover on again and turn it on :)
The battery is already inside the phone when you get it. My carrier rep put in the sim for me when I bought it :p
 
The battery is already inside the phone when you get it. My carrier rep put in the sim for me when I bought it :p

Lol really :D? Well then you have to eat the phone,s backcover loose or pull with internet help if you cant get it off LOL :D