It “might” be wise to see it as things being obscured from us due to a lack of receptiveness, instead of considering it to be “hidden”. Hidden seems to assume that someone is purposefully guarding knowledge. From my experience, those that behave as though they are keepers of some sacred knowledge are just mindless asshats.
Gurus, yogis and the most enlightened individuals on earth, don’t get enlightened by reading instruction manuals or paying for initiation. They pretty much just sit there and let it all sink in. Spirits might illuminate you on certain things, but they can’t spoon feed you the universe’s’ secrets. You need to transform yourself into a receptive vessel first. The spirits might have some more powerful revelations at that point.
You mentioned that you haven’t got all your spirit communication mojo figured out yet. Speaking with spirits isn’t terribly difficult. I’m sure you read about the theta-gamma-sync, but you might want to check out some advice on getting your mind to release your body a bit, to free up some focus to talk with spirits prior to the theta-gamma-sync.
You can try this one here:
Also, not to toot my own horn, but I wrote an opinion piece in the New Magician Help section that might help make you receptive: