Suitcase? Check! Camera? Check! Walking shoes? Check! Reading material? Prepare in advance with some book ideas! Language? Brush up on that French grammar! Frantastique is my Wednesday exercise. Then when I go shopping or chat on the street, those proper verbs just slide right out ... still studying though! Some of the books in my library are Paris walking tours. They provide enough material to stroll through Paris and explore. Another prepares you with a story and history for your Champagne tasting. David Downie's books are walking tours of history. Each chapter of each book weaves a tale of discovery. Tilar J. Mazzeo's book whisks you into Champagne history with…