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 ...

"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 ...