As for the second question, when you purchase the paperback or binder edition of the guides through the Passporter Store you automatically receive a digital copy as well. The digital copy can be downloaded to your Nook. If you purchase the paper editions at another store, then you will have to purchase the digital editions here at the Passporter Store. The free digital edition is just one of the many reasons I purchase mine directly from here.
As for the other question, I'm sure Jennifer, Dave, or Sara will be along soon to answer that for you.