If you are looking for instructional books/tapes, try "HOMESPUN TAPES" (Happy Traum), Woodstock, N.Y. 12498 Ph: 1-800-338-2737I'm looking at old catalogs (before they had e-mail), so I don't have an e-mail address (might try Homespun Tapes or Happy Traum and "Search").
You can select from a lot of styles and from the masters, like Pete Seeger, Pete Wernick, Bela Fleck, etc. Bela Fleck has a good tape on "Banjo Picking Styles." You can go either audio (cassette) or video. All I can say is this was the way I learned guitar. It was great. I went through 6 beginner folk tapes in 3 months (Happy Traum was the teacher), progress to 6 flat picking tapes, then on to finger-picking. Later I ordered a 12 string video that was just fantastic. What I liked about this is I was able to learn at my own pace - replay tapes as needed, etc. Hope this helps. Jim