Necromancer

The first way to begin necromancy is to get:
A Black Robe with Hood and Belt (Optional, but Highly Suggested)
A Staff (Optional)
A Blank Spellbook (Non-Optional)
These should be sufficient to start. The hardest thing in this particular art is to get started in the first place. After that, it should be a snap. A thorough reading of internet necromancy sites is a start. There aren't any really good sites out there (that I have found) that cover the actual use of necromancy, but it will give you a general feel for what to expect. There should be books available in any book store. If it isn't there, a great place for alternative religion books (although they are sadly lacking necromancy books) online is MagusBooks. Next, all the items should be assembled. You can shop about and get most things from a typical grocery store, fabric store, forest area, or book store. Next, you need to find a cemetery. Of course, being necromancy, you have to have dead people around to start half this stuff. The main tool of a Necromancer is the death ether. An occupational hazard of being a Necromancer is that, working so close to the essence of death, one becomes consumed by the very forces they are attempting to channel. Being careful, with necromancy as in conjuring, is the key to survival, and correct execution of the rituals is the key to power. With Necromancy, you must experiment. There is no cut and dried way to simply pick up, "The Big Book of Necromancy" and be on your way. It is a personalized art that requires you to do your own brainwork. Study gem properties, metal properties, demon summoning, wizardry (to a small extent) and magecraft for a general idea of how magic works. With that understanding, warp and twist the knowledge so that it can be used to work with the forces of death.