The Long Goodbye, Raymond Chandler, 1953
http://www.detnovel.com/longgoodbye.html
Concise summary of the novel's plot, which may prove useful, as first-time readers may find it difficult to follow all of the characters and events. Also contains a brief passage analyzing the novel's themes as compared to Chandler's other works.
Raymond Chandler: A Biography
https://www.nytimes.com/books/first/h/hiney-chandler.html
Lengthy New York Times biography detailing the life of Raymond Chandler. Useful for this novel, as Chandler drew heavily from his own experiences when writing it.