I took a course at Stain Glass Imagery in basic techniques of this craft. It was very rewarding and I did learn some basic techniques.
The shop has all levels of learning. There was a fellow learning some intricate work with beautiful gemlike pieces. The experience was like living in the medieval times where one learned the skills and crafts from the guild.
The shop work on windows, lamps, etc. They also restore Church stain glass windows from a century or more ago.
I will one day take a more advanced course in stain glass since I found it so rewarding.