Well you can study in necromancy and eventually become a lich. You just need to understand how to bring your soul outside of your body and place it into a soul jar. A soul jar can be pretty much any object, but you need to keep it safe because it is your life force.
Please be warned that once you do this, your body will be without a soul, so it will be a walking corpse. You will pretty much be a skeleton within 6 months. But if you are OK with this, it is a great way to get rid of your soul.
I am not to be held responsible for anything you do with the power of necromancy. Use at your own risk. I am also not responsible for your destroyed soul jar.