It's a blog! Mainly of book reviews.
The text of this book is awful, indulging as it does in hyperbolic flights of meaningless cod-philosophy to "explain" what is probably mostly the result of deteriorating eyesight on the part of Turner - and I quit the text at p66. Turner himself, however was a great artist with both oils and water-colours and the pictures reproduced here are a delight.
I don't know but I suspect that there's probably another affordable book about Turner that might show some more useful insight and I'd suggest looking for one before getting a copy of this.