Asset store

I'm fairly new Im fairly new to the unity community... (that rhymes) ... and I got the demo Bootcamp. It comes with a beautiful terrain as well as a character and its animations. I want to make a video game. Am I allowed to use the character and its scripts (not the terrain or anything else) in my video game? I don't want to take credit for the Guy's work... Should I credit. Him or not use his stuff at all? Please help