The product description describes the Tribute Guide in the following manner (typo copied directly - they didn't even take the time to proof read this description!):
"The ultimate guide to the twenty-four Tributes participating in Panem's 74th annual Hunger Games. Follow the Tributes' journey from the Reaping to the Games, with a look at all teh highlights along the way. Get exclusive information about the Tributes' strengths and weaknesses, their weapons of choice, and their training before entering the arena."
A number of Tributes were secondary or ternary characters and it would have slowed the pace of The Hunger Games if Suzanne Collins went into more detail of all the Tributes and their districts in the book. This means she created empathy for a number of characters without allowing the reader to hear their story. From the product description of the Tribute Guide I expected the compiler to have worked with Collins to fill in the gaps left in the books. Instead the Tribute Guide consists of a series of images with small pockets of information taken from the books, just leaving blanks on any of the information not contained in The Hunger Games. It mainly re-tells Katniss and Peeta's journey in synopsis form, with little more than a nod to the other Tributes (aside from filling the centre pages with a page shot of each character from the film.)
It feels as if this was pulled together by a marketing executive in an afternoon with no consultation with the author of The Hunger Games. This book was a great disappointment.
I freely admit that I have been naive to the core aims of brand merchandising in purchasing this book and would urge you to not make this mistake!