The lore sheet lists the commonly known sub-skills which may be studied anywhere once the category skill is known. Some sub-skills within a category may not be listed in the category lore sheet. These are not directly studyable, even once the parent skill is known. They must either be learned from a scroll, a rare book, or through research. The character is in a city which teaches the skill.
Many cities offer instruction in skills.
The player has a book which teaches the skill. The payment is used to acquire various materials needed for the study and eventual practice of the skill. Some advanced skills require Noble Points to begin study. Each player begins the game with a number of NPs, and receives an additional one each year on the anniversary of their entry into the game. Noble Points may be spent to acquire new nobles, or to learn advanced skills.