My friend Denise put several videos up which show the progress of a young Border Collie
from 8 months to 22 months, in sheepdog training. It's a little
technical but pretty easy to follow with the video. The last ones are
really awesome even if you don't have an interest in sheepdog training
at all. They are beautifully shot and Denise's voice, both narrating
and while speaking to her dog, is very lovely and nice to listen to.
The first one is here:
Starting May's training - eight months old - http://vimeo.com/5237059
Follow the links to the rest of them, in order of May's age.
Note
how it's generally Denise's choice to set May up for success, and make
something easy, rather than forcing her to do it, or punishing May
until she does it to avoid aversive pressure.