lacrimode Unfortunately, it seems I no longer own any books that cover arm movement (plus they were not in English iirc), so your best bet is to probably look up videos about gesture drawing or attend a life drawing session at your local art school. Hope these help.
The first six images are from Guptill’s Rendering in Pen and Ink, the others from various Sarah Simblet books. Grip tends to be overlooked in drawing tutorials, so I included something about it. While drawing long strokes with the shoulder, I tend to use the ‘candlestick’ grip.