Stumped

[Lin]

I need help understanding these instructions:
With smaller needles and MC, cast on 47 sts. (P 1 row, K1row) twice. With C, p1 row. With C, work turning row as for back. (This last sentence I don't get...) Change to larger needles. With MC, (p1 row, k 1 row) twice, p 1 row. Work joining row as for back ( don't get this either). P 1 row. Beg with chart row 17, work in Chart Pat, AT SAME TIME, inc 1 st each side (working incs into pat) on 9th row, then every 8th row 9 times, every 10th row 2 time- 71 sts. Whew...do I need help....LOL