Soul means that every thing you buy with soul crowns or soul shillings will be bound to your char.
Soul crowns: Easiest chash to earn in the game,if you selll the drops you get with your imamu you get soul crowns. When you reach lvl 90 there will be an adventure quest this quest gives you a chance of getting fairy Jades = 20g soul crowns.
Crowns: Crowns are more expensive as these are harder to get! To get normal crowns you sell the drops, you get from killling mobs, to the different merchant npcs in town. At lvl 50 you get a daily quest which helps you earn crowns (the quest is called Tool trade).
These you mainly get from main and brand quests, but every month 1 - 7th you ... to be contibued