Unless you live a Compact-like lifestyle, you are going to be shopping on a somewhat regular basis. Whether it be home improvements, gifts, furnishings, crafts, gardening, fashions, babies, sports, pets or anything else you have going on, there is a green option to be found.
But where do you buy from? I’m all for promoting local businesses and buying from small stores right in your own town. Unfortunately, depending on where you live, you may have little to no options in that category. The easiest thing to do is log on to the internet (and you already have since you are reading this) and partake in the massive variety it has to offer.

A Printed Book on on-line shopping?
Marketing never ceases to amaze me: this is the "where to buy online", the dead-tree printed version? Next one will be the glossy print edition on chlorine free toilet paper...
The authors should look up http://en.wikipedia.org/wiki/Oxymoron. Other idiom alternatives: common sense, irony, chutzpah...
But amazon and BN must be on the list, since they sell their book there...