for frailing I highly reccomend Eric Muller & Barbara Koehler's "Frailing the 5 string banjo" mel bay carries it. There is a cassette tape available. Frailing & Seeger's style sound verry similar but technicaly are a bit different. Seeger's style starts withan up pick while frailing is all down strokes. For Scruggs style try Jack Hatfield's Bluegrass banjo method. Good luck