for several years now the Llantrisant Folk Club has run discovery sessions. The express purpose being to play just a very few tunes over and over again at a crawling pace to allow the very beginer to learn and to join in. The standard picks up surprisingly quickly, in direct parallel with the confidence perhaps. A booklet of tunes and even a practice cassette where available at one time. The sessions are on hold at the moment but keep an eye on folkwales.org for future plans. Or why not start one in your area. It needs a couple of dedicated tutors who can hold speed the plough at snails pace and it will grow from there.
Good luck.