The word "divination" suggests contact with divinity, implying by it's very name
that only divine or godlike spirits can respond once invocation is made.
This is not necessarily true.
Practicing any form of divination is like opening the inner door to your own subconscious mind. Once that door is open, anything can enter, whether positive or negative in nature.
The key to handling this is to protect yourself, and to remember that the most important part of protection
is in preparation and intent.
Their are many tools used in divination: Tarot, Runes, Scrying, Palmistry, Astrology, I-Ching,
and many others. It may seem confusing to choose a tool.
What you need to remember here is that these are just tools.
They are designed to put things in focus for you, the true power is
inside you and your mind.
I would suggest you just try them all and pick the one that is most comfortable for you.