Here is a great article with lots of sources talking about the holographic universe:
https://www.crystalinks.com/holographic.html
The deeper one gets into searching what is going on, the more the holographic nature of this world becomes evident.
So then is all of nature, the universe, creation a fractal/hologram, or are we in some kind of prison?
I mean, if we cant get out of this hologram and see whats on the other side, or at least comprehend what is really going on, then we really are in a tricky situation.
The only material that I have come across that give practical methods/tools and a path to follow, are the teachings of Jesus Christ and the writings of Carlos Castaneda and David Bohm.
There are other philosophies and religions that teach similar stuff I have found, but nothing in a clear and practical way as the above mentioned sources.