I watched these backwards, the proper order is Torso, Bust, Arms* and I learned a lot. Each video was 30-40 minutes and clearly showed the changes that could be made to ensure a perfect fit. I’m thankful that my library carries these, as they are quite expensive (and not worth that amount of money) to buy.
Cost: free from library
Where watched: at home.
*there is also waist and hips, but I’m doing a shirt so I didn’t get that one.