The controversial forward knows he's on his last chance at Newcastle.
"It's a big chance to get my life back on track and add a second promotion to my CV," said Ranger. "People are watching me.
"This club is bigger than some in the Championship. I've done my research. It's good to be here.
"There are good players here, a good bunch of lads. The banter and the vibes are good. Hopefully we can get up there. We're second. But anything can happen."