Here you can train and get better at Ninjutsu,Taijutsu or Genjutsu.At the begining your level is 0.

Now I will explain you what are this skills fore:
If your skill(Ninjutsu,Taijutsu) is level 3 that means you will get +300 bonus damage to all techniques of the same type as the skill.If it's lvl4 you will get +400dmg.Lvl5 will give you +500dmg and so on...
Example:
Fireball jutsu normaly does 50 damage.But if your Ninjutsu is level 4 it will do 400+50=450dmg.
Lions Barrage normaly does 100 damage.But if your Taijutsu is level 4 it will do 400+100=500dmg

As for the Genjutsu it's a little difrent:
The higer your Genjutsu level is the more damage it does.
Example:
The Genjutsu skill "Infinite Darkness" normaly doesnt do any damage.But if your Genjutsu skill is lvl 3 it will do 300 bonus damage.That means the Infinite Darkness will not only make the oponent unable to attack but it will also do 300 damage.

Here are the prices:
Taijutsu:
lvl 1 - 2000ryo to learn
lvl 2 - 4000ryo to learn
lvl 3 - 6000 ryo to learn
lvl 4 - 8000 ryo to learn
lvl 5 - 10000 ryo to learn
Ninjutsu:
lvl 1 - 2000ryo to learn
lvl 2 - 4000ryo to learn
lvl 3 - 6000 ryo to learn
lvl 4 - 8000 ryo to learn
lvl 5 - 10000 ryo to learn
Genjutsu:
lvl 1 - 2000ryo to learn
lvl 2 - 4000ryo to learn
lvl 3 - 6000 ryo to learn
lvl 4 - 8000 ryo to learn
lvl 5 - 10000 ryo to learn