please help explain

[molovekayak]

please help me with these directions. It says beginners but I am a little confused. Thank you so much.
Cast on 38 st. (26 stitches with bulky yarn). For a skinny scarf, cast on 18 (14 stitches with bulky yarn).
Row 1: Work 2x2 ribbing across the row, beginning with K2 and ending with K2. Turn.
Row 2: Continue ribbing by working stitches as they appear, beginning with P2 and ending with P2.
Repeat the last two rows until scarf is desired length.
Bind off stitches in rib (if the stitch is a knit stitch, knit it; if it's a purl stitch purl it; pull stitches over one another as usual).
Weave in ends.