NHK Television has posted two very lovely videos in the English language that are available until 2/3/2016. The first is entitled:
An excellent overview of suiseki was some very fine stones being shown as well as locations to find them throughout Japan. The video is 28 minutes in duration.
The second title is:
An excellent introduction into the tea ceremony that runs 28 minutes.
We hope you see both of these video before they are taken off-line.