A spellbook is a collection of magical spells, rituals, and instructions used by practitioners of magic, such as witches or wizards. These books often contain detailed descriptions of how to perform spells, the ingredients needed, and the intended effects. Spellbooks can vary widely in content, from simple charms to complex rituals. In many fantasy stories, such as those featuring characters like Harry Potter or Merlin, spellbooks are essential tools for learning and mastering magic. They may be ancient tomes filled with handwritten notes or modern guides that simplify the practice of magic for beginners.