Magic is divided into six schools of study:
num name time to learn --- ---- ------------- 160 Magic two weeks 1 NP req'd 161 Weather magic three weeks 1 NP req'd 162 Scrying three weeks 1 NP req'd 163 Gatecraft three weeks 1 NP req'd 164 Artifact construction four weeks 1 NP req'd 165 Necromancy four weeks 2 NP req'd
Magical spells are simply sub-skills of one of the magical skill categories.
An aspiring mage will issue the
study order to learn the basics
of a particular school of magic, known as the category skill. For
example, one wishing to pursue knowledge of Magic  would order:
Once the category skill has been learned, the mage will receive a lore sheet listing some of the known spells of that school. The magician may then attempt to learn these spells through study.
A character must know the category skill for a school of magic before a spell in that school can be known.
Only some of the spells in the each school are commonly known. The more
rare, obscure or powerful spells will need to be discovered via
research or by finding magic scrolls describing them.
Knowledge of individual spells in a school of magic is not possible without having learned the category skill.