I tried to read this several times, but found it better as an audio drama. This free recording from NPR is really good quality:
https://archive.org/details/NPRPresentsACANTICLEFORLIEBOWITZ...
https://archive.org/details/NPRPresentsACANTICLEFORLIEBOWITZ...
Do want to put out there that this is an abridged version (though don't remember anything significant being left out).