I didn’t know much about flamenco prior to arriving to Spain. To be honest, I still don’t know that much about it. But we did see it two times while in Spain (once in Seville and once in Madrid), and both were quite enjoyable experiences.
The first time that we saw it was in Seville at La Carbonería. The performances were free, and the food and drinks were cheap and plentiful. We got there early and stayed for two of the performances. On hindsight, we wished we had stayed for more.