I would say take it out first and read the first few chapters, then buy if you like it so far. It is a Postmodern book you see, and many find that the style is either too confusing, or the narrative is too dogged down with metaphors and useless information to be interesting.
If you like the work of Thomas Pynchon, I'd really recommend Don Delillo.
P.S. I really made the plot sound dull and a bit cheap, but I really would not say the actual book is like that.
The most merciful thing in the world, I think, is the inability of the human mind to correlate all its contents. We live on a placid island of ignorance in the midst of black seas of infinity, and it was not meant that we should voyage far. - H.P. Lovecraft | The Call of Cthulhu