Fingerstyle Guitar is a great brain developer, a great motor skill developer, and a great way to enjoy life, and to help others enjoy theirs!
Since most musicians spend a majority of their time playing alone, fingerstyle guitar offers the perfect multi-voiced, piano-like approach to playing solo guitar. It usually features a melody, accompanied by a simultaneous bass line and mid-range harmony notes, all played by one person on one instrument. Like a mini piano!
I have written many books and DVDs helping the aspiring guitarist learn to fingerpick patterns, to subsequently break the patterns, use alternate tunings, and generally have great fun playing the guitar. I hope some of the titles can assist you! You will find them here: Accent on Music