Sounds like the lock screen is on. The easiest way to get this off is put your finger near the bottom and swipe up. It might take a couple tries but a screen should come up and there will be a picture with a lock and a circle around it. Tap that to turn it off.
You can can also do it in settings somewhere plus turn off the password option if you like.
Post again if if you have troubles and I will check back to see if you need more help. Good luck!
