You can pick up two different vocation skills in ESO. Each vocation allows you to do different jobs to help you.
You can learn most of the vocations in Pokari. Talk to Roki the Woodsman (476, 463) to learn any of the Gathering Vocations. They include Mining, Foraging, Woodcutting and Skinning.
Each gathering vocation is used to support a crafting vocation. Mining will help you gather metals, which are the materials for Guardiancraft and Petcraft. Foraging gathers herbs, which are used for Herbalism and Cooking. Woodcutting gathers lumber, which is used for Scoutcraft. Skinning is for skins which is used for Arcanecraft.
You can learn the crafting vocations from Bolo the Craftsmen (449, 501). The crafting vocations include Guardiancraft, Scoutcraft, Arcanecraft, Herbalism and Cooking.
You can learn Petcraft from Molon book Merchant at Gau's Fazenda (898, -474).