The original SG Handbook videos were lo-definition (pre-digital) so, rather than re-film them, I have included links to some existing YouTube videos which give similar advice:
Cutting glass to a cardboard template.
Cutting an inside curve.
Leaded windows: Remember, when you put the piece back on the cartoon, you must be able to see your black marker line all around the piece.
Basic glass cutting skills.
Copper foil technique.
Lead technique.
Cementing a leaded window.
Soldering copper foil.