So glad that this is coming along. ws is wrong side (wrong side faces in closest to the body; rs, right side faces outwards). So you want to end having completed a wrong side row (a purl row in stockinette stitch) and turn so that the right side is facing you ready to be knit.
Cast off or bind off 5sts and then work to the end of the row, turn and cast off 5 sts and then work to the end of the row. You're shaping the armholes.
For the raglan decreases the next directions depend on the size you're making. For the smallest size, work 8 rows, decrease one stitch at each end of the next row and the 4th row after that. For the medium and large sizes, work 4 rows and decrease one stitch at each end of the next row. When a pattern has 0 in the directions for your size, just skip those directions.