Great way to learn.
I use the "free" version of this app to learn how to play the uke. It provides instructional videos and feedback to get better. The free version has a time limit on instruction minutes per day, but you can still continue after those minutes are up - you just dont get the feedback as you practice. I would recommend this for parents and teachers, as it would be easy for a child to navigate as well.
Neddie78 about
Yousician: Guitar Lessons, v2.5.3