Watch the tutorials while you're waiting, and as soon as your brush comes start slinging some paint. You learn by doing so practise, practise, and practise again, get comfortable with the different strokes, and use them in a simple piece. It's much more satisfying to have a finished piece of art. Re-do that piece again after a week or two, so that you can see how you're progressing.
Post your efforts here for some tips and constructive criticism. You'll be as addicted as the rest of us in no time!