"Aloha, everyone!" is Cynthia Lin's cheerful greeting to start her ukulele instructional videos which have compiled millions of views on YouTube. It is like a dear friend's individual welcoming. Her ...

BERKELEY, Calif. (KGO) -- "I love teaching the ukulele because I can see that it makes a difference in peoples' lives," said Cynthia Lin. A San Francisco ukulele teacher and her students recently went ...