You Tube videos
Dorsetdog YouTube video channel
Dorsetdog has a number of videos on YouTube. They are stored in relevantly named playlists - categories.
One can either scroll through the list of videos, or click on the "List of playlists" button. With the list of playlists displayed - select a playlist and then select a video to watch from that playlist. Click on the "see Playlist" button to go back to the list of playlists.