So how do i?

a little help please?

Row 1 (RS): Knit.
Row 2: Purl.
Rows 3-6: Rep last 2 rows twice more.
Rows 7-10: Knit.
Rep Rows 1-10 until piece measures approximately 66 in. (167.5 cm).
Bind off.

What exactly are you having trouble with?

Does this make more sense?

Row 1, 3, and 5 (RS): Knit.
Row 2, 4, and 6: Purl.
Rows 7-10: Knit.

Repeat rows 1 - 10 until you have 66 inches