Start by researching the subject, knowledge will be your best protection.
This person (and some of her students) helped me out some 18 or so years ago.
She's the Genuine Article.
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Please note the light within everyone. That is the light of the divine within YOU and that is where the inner voice is located. Your intuition is part of your divinity. It loves you unconditionall…
echobodine.com
From there she can give you the very best guidance, to point you in the correct direction.
NEVER ASSUME THAT ANY SPIRIT IS GOOD...Unless you have experience,
experience takes time to evolve into knowledge.
This is a source where I eventually went for learning.
demonology - Google Search
I've learned the differences in spirit manifestations throughout life
by experiencing the realities that come with it.
As far as protecting oneself....I would advise to NOT GO THERE(!)
until you research the field first.
THE absolute BEST protection is to not 'Go There'...Period.
I received my Blessings to deal with these things from the Holy Christian Church.
You may offer spirits (Faeries...Elementals.....Djinn.....etc) all the food you want,
but would you really know just what (or WHOM) you are enticing into your life?
There's more to Divination...Conjuring...Scrying....Ouija....Etc,
than meets the eye. Don't open doors or lay out the welcome mat
until you're prepared to deal with something that could not only harm you,
but could ALSO harm your family, friends, anyone you know....even your pets!
Knowledge is definitely power in this case.
Learn before you proceed.
IMHO.
