-What are the character Bio's for?
They are biographies used in Role Play (you will mainly see it as RP). They are used for competing against other users in RP battles and sometimes other RP events.
-What is Ninja World for?
It is a section in which people, using their RP biographies, can act out battles and wars.
-What is the Jutsu center for?
It is a collection of data on the various canon jutsu that can be learnt for the purpose of RP. It also contains some Custom Jutsu but you won't need to know about that until you're more experienced in RP.
-What is the Battle and Training Arena for?
You must learn jutsu from sensei and senpai before you can use them in RP, that is the purpose of the Training Arena. Once you are able to RP (you must have an approved biography and training) you can go up against other users in the Battle section.
-What are Sages for and what do they do?
Sages are people with post counts above 10,000 but below 30,000. The rank is just used in RP and it controls what KG, elements, and what rank you can learn jutsu to.
-What do you get from premium?
I've never been a premium member but I believe there is a post about the privileges. You can have a larger avatar, can delete your own threads, change your username, and other things which slip my mind.
-What is Kumi?
It's a currency. It is pretty pointless unless you decide to trade it to other members in exchange for graphic work like avatars/signatures. It can also be bet in RP fights.
I've never RP'd or been a premium member so please correct me if I have any mistakes.
