Ever gotten together a huge wad of dough or clay and carefully molded it into a sock puppet that you talked to for hours on end until it stole your name and firstborn? No? Well now you can, with Aetheriomancy!
Aetheriomancy is the school of magic covering everything from summoning to communing to dreams. Essentially, anything involving a hole between here and somewhere else. Consider the previous metaphor but instead of dough or clay, aetheriomancers mold the space between worlds. This is called many things, but for simplicity I will call it aether.
Aether is a delicate thing to work with so any practitioner who wants to get their aetheriomance on needs to be good with the sensitive ends of magic. Void-weavers tend to be those who have an in-born sensitivity to the arcane but this can be practiced with the right teacher.
Personally, anyone interested in Aetheriomancy should practice with as many aids as possible. A circle to keep your workspace sterile, any ammount of foci you feel you need, and as many pre-ritual cleansing as possible. If there was a non-arcane equivalent to heavy duty aetherworking it would be surgery.
Some of the most common forms of Aetheriomancy are seances, scrying, minor summonings, communication with spirits, even low level illusion magic. It is the easiest form of magic to practice but also the most difficult to get started on, due to its high requirements of sensitivity and precision.
Do not attempt any sort of psychic magic. Most likely you will be a bull in a china shop and run the serious risk of causing permanent damage.
Compiled from the caretakers notes