I'm still a noob myself (3 months, 1 stripe) but aside from our instructor everyone is a white (2 4 stripers, 1 3 stripe) since I have joined we also have had quite a few new guys come in. I rely a LOT on my wrestling background, but my philosophy when dealing with new guys is kind of the same attitude I had throughout my wrestling career.
1)Encouragement-being a dick to a new guy does nothing for the sport, and is going to cost your gym a member, and you a potential partner.
2)As dick-ish as it is to say, I use the newer guys to practice things I am weak on, or just learned. (For example Sunday I hit a new guy with a bow and arrow choke in gi) we talked about what I did afterward, and our instructor threw in his advice for defense. The same philosophy is true in wrestling. If there's a newer guy in the room, you want to use any time with him going live to work things you need to work on, over and over, getting the technique down, before you go out and try it in a match/fight.
Just my 2 cents.