They are a little unclear. However, here is what I would do: I would pick up the 40 stitches (just pick up the bottom part of each of the original cast-on stitches) on my RIGHT hand needle, with the RIGHT side of the fabric facing you. Then cast on the additional 40 stitches, the way they tell you to. NOW, when you turn the fabric over to begin the next row, that needle will become your LEFT hand needle and you will be about to begin a new row on the WRONG side. I'm saying this because it then tells you to do what you did with square 1 all over again, and row 1 of the pattern begins on the wrong side, so you'll be all set to go.