I am playing it, but I don't fully understand the leader and job system. Although I don't like the game much, it does have a unique system of play. From playing the game, I understand that using orders improves leadership points. Every character has their likes and dislikes. Some characters don't like certain weapons, some characters don't like certain orders. After using a weapon for awhile, you change jobs which gives you abilities with the weapon. Orders, and magic need to be equipped to use.
It also pains me not knowing exactly what to do in quests. I did manage to finish all the quests in the first village.