This Theosophical Society webinar series goes in-depth on the whole esoteric tradition of this world and covers some really mind-blowing topics and concepts. A must watch for anyone interested in the metaphysical view of the world, the realm of the spirit and the Occult. This is part one, but the rest can be found by clicking into the video and going to their channel.
I love that picture in the thumbnail because it sums perception of the other realm up perfectly. It’s here all around us, you just have to pierce the veil to see it.