I used to teach from the 'Edward Wing' banjo books. He's out of "Pick and Grin" in Knoxville, TN. Not sure if he's still selling his books.
I wouldn't recommend the Scruggs book until later on. Most of the beginning banjo books are poorly written IMHO.
Neil Griffin's books are OK and Janet Davis' books are better. Both can be purchased from my publisher, MEL BAY.