Quote from icarus618:
Did you really "offer" anything? Are you the copyright holder of the said book and are now renouncing such copyright and putting the book in the public domain? It's obvious you are not, which means either you don't know what it is to offer something to others or you are inflicted with psychotic delusions of grandeur.
When you put in the time and effort to scope and bound your use of a tool and release your work gratis with the intention to enhance other people's understanding, like Hershey has done, then you can say you offered something. Posting a link to someone else's work at an online retailer ain't offering shit.