I don't know if Ryan has a book on this subject but Melbay has two publications covering playing celtic tunes on the five string banjo in three finger style: Complete book of Irish and Celtic 5-String Banjo by Tom Hanway and Celtic Tune Encyclopedia for 5-String Banjo by Iain MacLachlan. The latter is more of a collection than an instruction manual. I also teach online lessons. jackdublanica@gmail.com Here is a video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-OJbR9SOdWBk.html