Chevron Scarf.....reverse stockinette?

Im wanting to start on the chevron scarf from last minute knitted gifts, and, maybe it shouldn’t but the pattern is confusing me…when I cast on my first color (im working on straight needles) I purl my next row? I’m confused but I think that is obvious! LOL:??:??

DUH! I got it! LOL…reading is key!!! LOL