I agree. I'm watching this show with my spouse who has not read the books. Her reaction after we watched this episode was "we have to go back and watch the rest". So many of the dots connected. My biggest issue with the show was that in the first vision, Janduin did not veil himself before fighting. By this point, all the other Aiel have veiled before going into a fight (and we now know why!)

I too am rooting for the show! It hasn't always followed the story of the books (some of that for reasons beyond the show runners control) but its very enjoyable to see a story with the books' characters and in the books' places.