Book excerpt: New Jersey is home to classic and legendary boardwalks -- explore all of them, past and present, is this accessible guide to the Shore's ''boards.'' This take-it-with-you guidebook offers locations, directions, maps, as well as side trip suggestions. Boardwalk history and trivia are included along with color photographs and old postcard images. This expanded and revised 2nd edition also includes a new section about biking the boardwalks, too.