As of 2015, Sparknotes does not offer a study guide for "Into the Wild." Other study guides, including Cliffs Notes and Gradesaver.com, do feature aids for students who wish to supplement their own reading of "Into the Wild" with a reliable study aid.
Although Sparksnotes.com offers hundreds of titles, Jon Krakauer's "Into the Wild" is not among them. Cliffs Notes offers the book's time line in chronological order as opposed to the non-chronological order the book presents. It also provides a character map and a Glossary for terms found in the novel.
Both Cliffs Notes and Gradesaver offer a chapter breakdown including the summarization and noteworthy aspects. Gradesaver also provides a list of essay topics/questions, quizzes and further information about how the protagonist inspired many "copycats."