I got a viola for Christmas

So I got a viola for Christmas. Now I have to find some instructional materials and get the basics down and maybe get some lessons later...maybe. I figure I can learn a good bit on my own and have friends who are string players who I know can help me out. I already play mandolin, so I know a little about instruments tuned in 5ths. Viola just sounds interesting. It is pitched lower than a violin and generally plays harmonies. Strings are C G D A...and since I play guitar and sing baritone it should fit well in the range of stuff I do....even playing melodies. I tuned it up and bowed it some and it has a bigger sound than I expected. The low end resonates well...If I can learn to play it I think it will be a lot of fun. So we shall see how it progresses in 2014. My son takes strings at school and plays violin. May in the future we will be able to do some stuff together or with friends....here's hoping.