The book The Spirit Molecule was written by a psychiatrist that did IV DMT research on patients. There were notable similarities between their experiences, though I believe it is best categorized as 'esoteric' in the sense that it is essentially indescribable in a linear, human way.
The only way to know what it is like, is to experience it firsthand since there are literally zero words that accurately depict it.
For an ELI5 analogy: It is equivalent to describing to someone who is blind and has no sense of smell what it is like to stand outside and see a rainbow while breathing in the fresh air after a rainstorm.
No, I like books.
Here is a documentary.
OR you get assraped by a crocodile (if I remember one of the stories correctly from this book).