I just discovered BluegrassGuitar.com. They have a concise tutorial of the techniques used to play Wildwood Flower, a Bluegrass classic by the Carter Family. You will be required to install a plug-in to view the tablature, but it is worth it.
If you like that, you might also want to put this in your Netflix queue.
Or download the original song from archive.org.
Would you guess one of my favorite movies is “O Brother, Where Art Thou?“