A Million Little Pieces is the pseudo-fictional story of its author, James Frey, and his time in a rehabilitation clinic. Written in a unique stream-of-consciousness style and with dialogue un-delineated from the protagonist's thoughts, the novel is a tangle of fact and fiction. It deals with the terror and reality-warping nature of addiction and with the protagonist's struggle to erect firm boundaries between his illness and his sober waking life.
Boasting the largest collection of book summaries, BookRags is the best option for titles you can't find elsewhere. They offer all of the basics (quotes, chapter summary, characters, historical context, literary criticism) but also walk through a few major topics that recur throughout the book, which can be particularly useful for essay writing.
The most popular website for book notes. SparkNotes was created by students for students, and their summaries are accessible and extremely well-written. Besides the usual plot overview, chapter summaries, and character analysis, SparkNotes differentiates itself with a section discussing themes, motifs, and symbols.