Great question, @Trey!
I mentioned Ouija boards in the Veil Between Worlds Challenge, but I can’t say I’ve ever used them myself.
I’ve heard so many spooky things or things going wrong when using the board that outweighed any potential benefits for me 
. Although to be fair, working with spirits and contacting the dead are not key parts of my practice 
. Advice and tips on how best to use a Ouija board (and use it safely) would likely best come from someone who uses them a lot in their practice.
Good luck and let us know if you find any interesting Ouija tips or facts in your quest for knowledge, Trey! 