While We Wait for an Arabic Course ...
. . . you can still learn Arabic using an app I found. It's method is very similar to Duolingo's. I downloaded it and tried it, and it was pretty good. It's also free. (I don't know if it's available for android).
PS: If you have any questions about the grammar/spelling/anything, ask me =)
Haven't tried it myself (yet), but Google Play rates this app highly: https://play.google.com/store/apps/details?id=com.atistudios.italk.ar