Scrolls in Fiesta have a variety of effects and may be acquired in a variety of ways. Many scrolls may be produced by characters with the appropriate skill, and skill level. Most of these have some desireable effect on the using character (eg Vitality T1 adds 200 to max hp).
Skill scrolls expand a character's assortment of skills, and are most often purhcased from one of the skill merchants, though a few must be purchased from other merchants (eg the cleric's 'Revive' skill scroll must be purchased from the item merchant of Eldy).
Return Scrolls transport a character to the named town, and are most often acquired from quest rewards, but are also droped by some monsters.