Continuing in the Blender character animation tutorial, I'm now putting a skeleton inside my character's mesh skin. Only down to his waist at this point, but he can now be moved into different positions, like a virtual doll.
I had a rough time, though. Part of the process is assigning which part of the mesh follows which bones. This was done in the tutorial by a "painting" process which is not all that precise. Afterwards, I had a problem with portions of the shoulder getting all out of position with relatively small and benign changes in hand positioning. By doing more research, I learned how to go bone by bone and examine the association between mesh vertices and bones. I discovered that two vertices in the shoulder were associated to several bones further down the arm. After correcting that, things looked pretty good.