I stumbled upon these videos of Rafael Garcia teaching what I am guessing is Balkline, my Spanish is very limited. I am guessing that these videos might be helpful for somebody who understands the Spanish language. Rafael Garcia was multiple champion of Spain in 47/2, 47/1, 71/2 Baulkline, One Cushion, and Libre. These videos were probably made a few years before his death. Many hours of teaching, enjoy.
Rafael teaching in the Miranda Billard Club:
https://www.youtube.com/watch?v=1yxoOOi4m4A
Rafael teaching in ???:
https://www.youtube.com/watch?v=3Y03bFfpiXw&t=362s
https://www.youtube.com/watch?v=embDjIIFqZs&t=311s
https://www.youtube.com/watch?v=MY5lQ2qldVg
https://www.youtube.com/watch?v=BtLTGDeAh5g&t=846s
https://www.youtube.com/watch?v=ZXUuWp9kLKI&t=368s
Rafael teaching in the Miranda Billard Club:
https://www.youtube.com/watch?v=1yxoOOi4m4A
Rafael teaching in ???:
https://www.youtube.com/watch?v=3Y03bFfpiXw&t=362s
https://www.youtube.com/watch?v=embDjIIFqZs&t=311s
https://www.youtube.com/watch?v=MY5lQ2qldVg
https://www.youtube.com/watch?v=BtLTGDeAh5g&t=846s
https://www.youtube.com/watch?v=ZXUuWp9kLKI&t=368s