I play bluegrass banjo, and my wife is a classically trained violinist (in fact she is a violin teacher. Horror!!! Just kidding!). She is interested in getting into bluegrass fiddling.
Are there any books (or other resources) that could help her transitioning from "sheet-music-based" violin playing into Bluegrass? We already searched on Youtube and there is some good stuff out there, but the way she learns best is having a book in front of her with "lessons".
"Learning to Fiddle, Bluegrass Style", by Neil Rossi. It is "off the radar", so to speak, as he sells the book himself, with no association with major online retailers. Very good, no frills, just "how to do it". He already assumes the reader knows how to play the instrument, so your wife would do well with it, I would think.
I have just about every good fiddle book. Without doubt Neil Rossi's instructional is much better than any other bluegrass fiddle instructional. It is the best book for someone with playing experience and can read standard music notation. Recordings are provided for each exercise and tune. If you wife uses this book and CD, she will leave you in the dust within a year or two. In addition, she will be very popular at jams.