Below are links to sections of the SECOND HALF of his talk (the camera mike wasn't working properly in the FIRST HALF .... sorry!).
Sections covered are Preparation; Equipment; Personal Equipment; Cross Country Principles; Speed to Fly; Selecting Climbs; Routing; On Task; If You are Getting Low; Final Glide; Practice Effectively; If You Can't Fly Cross Country; Jonker Sailplane News.

Part 1 of 5

https://youtu.be/QiLhPL1-tQE

Part 2 of 5
https://youtu.be/S9h1tUc9fas

Part 3 of 5
https://youtu.be/yfpKb3LLv30

Part 4 of 5
https://youtu.be/VNYnBMggYyI

Part 5 of 5
https://youtu.be/lANf-SB-l0Y