20 Easy Fingerstyle Studies For Ukulele Book/CD Set, by Rob MacKillop. 20 Easy Fingerstyle Studies for Ukulele is a collection of pieces and exercises for fingerstyle ukulele, aimed at those who have strummed chords on the ukulele and wish to learn fingerstyle technique. Author Rob MacKillop introduces techniques for the left and right hand and explanations for each piece that help you along the way. The accompanying CD contains both slow and up tempo versions of very tune in the book.