Don't use them until you know what you're working with. The reason most problems begin with this stuff is because the user doesn't know what they've got their hands on! Quija boards can be very useful if you know how to properly use them, they can be an insight as to what to do for solutions to problems and can tribute many other purposes. They don't have to be evil or anything Satanic related, those are just superstitions made by those whom do not understand the tool. Keyword: Tool. "Tools" are just mediums used to channel energy between the Universe and the caster, which is the same concept as using spells to make something happen in your desired outcome. They can also be used as portals for spirits and demons in the other realms. I'm not going to get much more into it, but if you want to know more, just do extra research. Good luck and be safe!