a newb
A newb is someone who's just learning how to play. They might actually get better. They're not like a noob who just wants to annoy everyone.
"I'm a newb, not a noob, I just want to get better.", A guy who got beaten by a 12-year-old.
"Newb? I'm a newb, I just started playing.", A kid who joined the game 3 minutes ago.
"I'm a newb, not a noob, I just need to stop dying so much.", A guy who died 12 times in a row.