My daughter's (13 yo) favourite cuisine is South Indian vegetarian (taking top spot after many having Japanese there for many years).
We have no shortage of cookbooks and videos, etc on this subject (and I also cook a number of South Indian dishes from time-to-time). However - nothing can replace a good cooking class taken with your peers.
Google doesn't really turn up anything current. South China Seas Trading had an Indian class (taught by Vikram Vij) geared for adults....but I know their classes are more "demonstration" classes than "participatory." We aren't really interested in the typical "vegan/vegetarian" classes either.
Actually, even adult classes would be fine.