Here's a great source for free, easy, Viola sheet music and corresponding videos for audio, from capotastomusic!
...took me quite a bit to finagle this link to work directly. (lol)
May not look like it, but still takes you to a secure, https site!
Oops, I forgot I posted this one!
The main website page also has free easy music for Violin and Cello, so I'll post that for the list.
All of the corresponding Video scores are from Peter Edvinsson's YouTube Channel, along some of his original scores to try. I'll post the link to this for the list, also.