Indisputable beginner
If you don't mind the asking, how old (roughly) are you? How willing are you to practice on a computer simulator?
As far as sailing, I think it will help, but only a little. You will be aware of the wind, and its speed and direction, which I was not when I was learning. That will help when flying in the wind, but to start, you probably won't want to fly in much wind anyway.