"Tch, that doesn't help, if he has never been in an rpg before, he most likely doesn't know how to roleplay. You go to a thread and post an action there. For example, let's say you go to the ramen shop, you would post...
narutosbiggestfan_15
He walks in the shop and takes a seat at the counter.
"One bowl of chicken ramen, please."
You must describe what you are doing and use quotes when you are saying something (not everyone does that though, they have their own styles of roleplaying).
When you get into a fight, if you are simply rping out your fight, you CANNOT GOD MOD. God modding is when you throw an attack at someone and MAKE it hit them, no matter what they may say afterward. You can throw a kunai at someone, but you can't make it hit them. You must take turns with the person you are battling throwing attacks at each other.
......Also, you'll need a name for your character, age and all that good stuff, as well if you want to, what your character looks like.
I hope this helps you somewhat...."