Blood Meridian is the story of the Glanton Gang, a cadre of scalpers who terrorized the American West in the mid nineteenth century. The bulk of the narrative follows a teenage criminal known only as the Kid, an enigmatic figure sinking quickly into a life of violence. The story follows the Kid's meeting with the gang, led by John Joel Glanton and the vicious, inhuman Judge Holden, and his participation in their bloody crimes.
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.
You won't get any frills with GradeSaver -- just the content you expect. Their study guides include a full plot summary, themes and character analysis, study questions, and the e-text of the book. One hidden gem is their collection of literature essays, but you'll have to pay for it.