I'm also on the same boat, though with a 49-key (M-Audio Keyrig 49) and 25-key (Akai LPK25) instead. Violin experience has helped me a great bit (especially my left fingers), but I have a tough time with coordinating both hands' actions.
Recommending formal piano lessons and basic rudimentary books, for sure.
Garageband also does a half-decent introduction to piano keyboard if you have Mac, but you don't seem to have it. Those have helped me a good bit.
Though I use it for writing music, sometimes I find myself writing in a very different manner.
Instead of taking out my MIDI Controller keyboard , I often use OpenMPT (a Windows-based tracker program but it works well under WINE) to write down basic loops and melodies. I can then export them to MIDI files and have my DAW take them in, from which I can tweak the rest.
I don't always do this, however, since tracker's heavily geared towards electronic music and isn't as ergonomic for creating melodies (arrangement by patterns and loops).