Necromancy is the assertion of control over the spirits of the dead to gain knowledge. I recommend the use of a protective circle for such a ritual.
During the calling it is necessary for the caster to be relaxed and to enter a light trance state.
The Preparation of the Way:
Start with creating a rune circle of all 24 runes around the working area and sit down in front of the altar. Load up each rune by chanting its galdr.
Charge the prepared bindrune, the finished energy shape should be visualised in light mauve. Now project the name rune of the deceased into the bindrune, the name rune is visualised in dark red.
Start with the calling.
Hear me, <Name>, I call you!
Repeat the calling until you feel a presence, at which time you can verify that you got the right spirit and start the questioning.
After you received the answers to your questions, thank the spirit and tell it to leave:
<Name> I thank you for your disclosure
Now dissolve the name rune into nothingness. Then seal the bindrune by projecting Ingwaz on it to close the gate.