It shows that on the third row, we start from the 2nd bead. What this means is, as we look at row 3 on the pattern, we won't start at the very first bead (the yellow one). Instead we'll start at the second, green one.



Thread the green bead onto the string, skip a bead, and pull it through the green bead labeled below.



The second bead of the 3rd row is a blue one, so thread it onto the string, skip a bead, and pull it through the blue bead labeled below.



By now your cuff should be standing up quite nicely.

Finishing row 3
The last bead on row three is a yellow one. If you look at the pattern, this bead is actually first, but it turned into the last because we began stringing at the second bead. Place the yellow bead onto the string, skip a bead, and pull it through the two beads labeled below - the yellow and green ones.



Pull the string tightly, and then you're done with row 3! Check that your cuff matches up with the pattern, and if you understand how to complete and start new rows, finish the rest of the cuff by yourself using the row chart as reference and then skip to this section (click).



Starting the 4th row
The first bead on row 4 is the green one circled below, because again, we are starting at the 2nd bead rather than the first.



Place the green bead onto the string, skip a bead, and pull it through the blue bead labeled below.



Finishing the 4th row
The last bead on the 4th row is yellow. As with row 3, this is actually the first bead in the row if you look at the pattern, but it became the last because we started at the 2nd bead. Thread the yellow bead through the two green beads labeled below.



Pull tightly, and now you're done with row 4 :) check that your cuff matches with the pattern!