OK thanks. I already have an iTunes account from years back and actually used that for ordering the iPad Air online so I'm all set there.
I recently helped my daughter use Wireless Transfer App
to transfer videos from her iPad Mini to my Windows laptop, and that seemed to work pretty well. Once she runs the app then I can connect to her iPad from a web browser and then either download files from her iPad or upload files to it via the browser. (I didn't try upload, but downloading videos worked fine, so I assume it could work for uploading videos and music too). Even if that doesn't work, with the zillions of Apps available I'm sure there must be plenty that can handle music + videos without requiring iTunes.