Alchemy/Herbalism:

This Skill allows you to collect rare herbs and ingredients, and make different potions and other items from such collectables.
As you complete quests, you can find additional recipes to create more diverse and useful items.

Blacksmithing:

This skill allows you to use a Forge, where you can make new weapons and armor from mineral ores.
These mineral ores can be mined once you have learned this skill.
Each time you craft one piece of weapon or armor, you increase your skill value.
As you become more skilled, you learn additional plans, allowing you to craft more powerful and unique items not sold in stores.