A Sunday Morning Show played an excerpt on July 20, 2014, "Retracing Thoreau's journey through the wilds of Maine"; while not exactly Walden , this is a good introductory peek for you to introduce you to Thoreau's world and philosophy. What you will find is both the excerpt's video (about 5 minutes) plus an article with resources linked here. Henry D. Thoreau (best to view full screen) Henry David Thoreau's Walden: A Lecture by Annette Woodlief (something to listen to several times while you study Walden .) Study text for Walden online Thoreau: Analysis Analysis and Notes on Walden Something else you might want to check out - Lit Charts
Used to be a blog for AP English Language and Composition, but now has transcended beyond that.