You can redirect your puppy's chewing behavior by offering him something cold to chew on instead. Puppies in the first few months can be teething and will need to chew on something to alleviate their pain. Cold items to chew on such as ice cubes or faceclothes that have been watered down and set in the freezer can be some great items to give you pet. Not only will they serve to alleviate his suffering, but it will save your furniture too.
Other websites you can look at on this topic are:
http://www.peteducation.com/article.cfm?cls=2&cat=1551&articleid=164
http://dailypuppy.com/puppy-videos/playVideo.php?v=dog-training-puppy-chewing
http://www.unclematty.com/