Next to the playable Charakter classes there are 7 gathering- and 7 crafting professions in Blade and Soul. An overview about them and their alliances you can read here. With the professions you can survive dungeons more easily and let you surviv longer in PVP. With the different professions you can build items like weapons, accessoires or soul shields. You can wear those items by yourself or use them for augmentation. The professions can grouped in three groups. The group is build by matching of producing and consuming items.
Every character can learn 4 professions at once, but you can choose them as you want to. At the choice of what to take, you should take the professions of one group / alliance. So you can your crafted items by yourself and you don't have to by it from the autionary. Also you can join 2 crafting and 2 gathering professions at most on one charakter. So its impossible to make one character joining all guilds of the same type
With the alchemistprofessions you can craft charms and potions.
With the craftsman you can build your very own equipment and accessoires.
With supporter professions you can make potions, charms and soul shields.
A crafting profession that builds the soul shields.
The Silver Cauldron and The Earthseers
A crafting profession that produces jars and bowls
Woodcutters and Green Thumbs