Been getting more and more into acoustic blues so splashed out on a resonator and want to work on my fingerstyle and slide work. Can anyone recommend any books to help me along?

Been playing electric for 12 years but my finger picking needs work and whilst I've messed around with slide for a little while, I'd say my slide work is basic so a book with suggested licks and riffs or to help me work through some delta blues songs would be good. Something with a CD would also be a bonus.

Any recommendations?