Reading a scroll will temporarily allow you to cast the spell scribed. For example, reading a Scroll of Haste will allow you to cast the Haste spell for 1 hour. You are able to scribe spells you haven't learned yourself. Rank 20 spells cannot be scribed.
You must be at the University Scriptorium and have the required ink in your inventory. Hold a University Quill in one hand and a piece of Blank Parchment in the other. Use SCRIBE <Spell name> to complete the scroll.
Ink requires ingredients which are found and foraged in a variety of places. These ingredients are mixed in a Mortar and Pestle to create Pigments, which are then mixed with Purewater to create the different inks.