This website does not actually provide direct information, mostly ideas about how necromancy is to be preformed and what it actually entails.
There is a link from the Library that goes abit deeper with this:
Necromancy is simply a path, a means to live as any magical options. Simply put, it involves traversing the roads of death and between, and being willing to accept that you will inevitably die. Prehaps sooner then a majority of paths studying necromancy causes a person to confront themselves, their egos and fears to evolve spiritually.