From the rugged coasts of the Isle of Man to the stages of America, Davy Knowles has been making waves in the rock and blues ...

Yousician is among the better guitar learning apps for beginners. Its fun game-style interface is sure to be a hit with younger players.

Unlike Petty — who famously took guitar lessons from Don Felder when he was young and referred to rhythm playing as "a lost art" — Campbell is self taught.