Near the town of Bruna, go east, southeast. If you reach The Red Ruby Cave, you went too far. You will need to go back west slightly. You should see a shrine that, once activated, will give you Conjuration points as well as a temporary bound weapon and/or greaves. You can activate the shrine every 24 hours. Wait in front of it for 24 hours, then activate it again. Repeat this as many times as desired.

-Conjure a skeleton and repeatedly press the spell while the skeleton is there until you run out of magic. Then, do it all over again.

-First, summon a skeleton in an area with no other people around. Then, keep using Turn Undead on it to quickly raise it.