Many people want to learn an instrument like a guitar or piano, but finding the time and money for lessons can sometimes be a challenge. Fortunately,  a number of apps make it easier and cheaper. Yousician is billed a “your personal music tutor for the digital age.” It’s for  pianists, guitarists, bass and ukulele players –  from beginners to advanced musicians.  Included are more than 1,500 so-called “missions” and songs with hundreds of videos that help users learn everything from reading music to chords, and more. The app is free for iOS and Android, with premium features available for purchase. For guitarists there’s the Uberchord app. It uses your smartphone…