There are no prerequisites for starting down one of the Crafting Skill Trees! You can multiclass if you so choose but you must choose the abilities in the order they are presented on the tree. After you have completed a full Skill Tree, you have the option of finding and completing the in-game quests to unlock the Capstone abilities for each tree. Of note, each Capstone ability costs 2 CP.

An Enchanter is a crafter type that focuses their talents on forging magical objects. These Enchanted Items have properties that can enhance the strength of wielder, grant them special abilities, and even stave off death itself. The signature ability, Tinkerer, enables the creation of these items, provides the ability to attune to Enchanted Items, and the ability to identify unknown Enchanted Items. In the mind of an Enchanter, crafting is the art of turning ordinary objects into extraordinary things.
Level 1 ability: Tinkerer
You gain the ability to craft enchanted items. You can choose one list of Apprentice items to know and craft from the following 5 types of Enchanted Item lists: Accessories, Armor, Instruments, Tools, and Weapons. In addition, you can participate in Group Crafting to reduce the time it takes to create an enchanted item and you have a Tinkering Fatigue attribute of 1. Lastly you also gain the ability to identify Enchanted Items and attune them to characters. (Please see Enchanting for more information).
Level 2 ability: Artisan
You can choose 1 additional Apprentice list to know and 1 Journeyer list from the same Enchanted Item lists that you already know.
Level 3 ability: Artificer
You can choose to know all the Apprentice item lists or choose another Journeyer item list (provided you know the Apprentice items of that list).
Capstones for the Enchanter Skill Tree are unlocked by certain Quests that can be found in game. These Enchanter Capstones, unlike all the others, are sequential. Please see the Enchanting page for more information.
An Alchemist is a crafter type who specializes in combining unique elemental infused ingredients to create magical concoctions. These magical concoctions are known as Alchemical Items and they can buff a characters abilities when consumed, increase abilities when applied to weapons, or in rare cases create a magical area of effect. The signature ability, Novice, enables the creation of certain alchemical items based on what ingredients your character specializes in utilizing. In the mind of an Alchemist, untold power resides in every corner of the world; one must only know where to seek it.
Level 1 ability: Novice
You gain the ability to make alchemical items. You pick two Reagent Categories which your character knows how to utilize. You only have the knowledge to be able to create alchemical items using those two Reagent Categories, AND you can only create Apprentice level alchemical items.
Level 2 ability: Skilled
You gain the knowledge of another Reagent Category to utilize in your alchemical creations, and now you can create both Apprentice and Journeyman level alchemical items.
Level 3 ability: Expert
You gain the knowledge of another Reagent Category to utilize in your alchemical creations, and now you can create Apprentice, Journeyman, and Master level alchemical items.
The Cataclysm caused much despair and destruction, including erasure of the extensive knowledge of Alchemy and research that took centuries to conduct between academics across Erden. Now, in this dark time, Knowledge is Power and those who have it Guard it Well. Alchemist Capstones remained locked for all PLAYERS until they have discovered and completed a particular questline.