How to have the first contact with the occult

I’d like to start with something to convince me of the existence of the occult, I am being raised in a very christian house (so doing any ritual or buying anything “strange” is out of question) but always being, secretly, kind of an atheist. But with time more and more I am certain that are things that I, at least, do not comprehend, and there are even things that I’d, currently, be unable to understand. Im rather skeptical, even though I know our senses can deceive us, I can’t believe something until I, my self, expierence it. So starting with something that i could easily expierence would be great.
Also I, personally, think that using any other “instrument” beside de self is not necessary; just our consciousness/thoughts/instincs/other things in ourselves should be more than enough.
How should I start?

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