This novel is a combination of several previously published pieces, the main one being "With The Bentfin Boomer Boys On Little Old New Alabama," which originally appeared in Harlan Ellison's anthology "Again, Dangerous Visions."
In the introduction to that novella, Ellison wrote: "This story will enflame and infuriate the traditionalists; it will amaze and intimidate older, longer-established writers; it will confound and awe the critics; it will become the subject of fanzine articles and bull sessions and convention panels; it will cause voices to rise, adrenaline to pump, editors to howl, imitators to scramble for their copy-riters [sic]. It will raise one hell of a noise... It is so audacious and extravagant a story that it becomes one of the three or four really indispensable reasons for doing ["Again, Dangerous Visions"]."
"With The Bentfin Boomer Boys On Little Old New Alabama" went on to become a Nebula finalist, though not landing that award as Harlan Ellison predicted.
The writing in different sections of the book follow different forms of grammar and punctuation, making it a challenging read. (See the Wikipedia entry of this book for an example).
That said, this book is not for everyone. The passages telling the story of Gordon Lester Wallace III and Freddie are the hardest, told in a pseudo-Southern drawl that will bring your pace to a crawl, dontchaknow.
Rather than read this novel you're probably better off with a copy of "Again, Dangerous Visions," sticking with the original 36,000 word novella. Less is more.