This photo tutorial will teach you how to pick up the gusset stitches using the Magic Loop Method. As always written directions are underneath the photos.
Bring enough cable out to easily reach the first slipped stitch. Place a stitch marker on your working needle. Insert your needle from the front to the back ensuring your needle goes through BOTH loops of the slipped stitch. The gusset you are creating here is on the left side of the turned heel.
Yarn over your needle and pull through the slipped stitch.
This is what your first picked up gusset stitch should look like.
Insert your needle into the next slipped stitch, yarn over and pull through the slipped stitch. Repeat this across the side of your sock for the required number of stitches in your pattern.
You have now completed the first gusset. Place a stitch marker after the last picked up stitch and the top of your sock and knit in pattern across the top of the sock.
Place another stitch marker on your working needle, pick up gusset stitches along the second side of your sock in the same manner as the opposing side. The photo above shows what your sock should look like at this point. Place another stitch marker after last picked up stitch. I recommend this stitch marker be a different color if possible as this is the beginning of the round.
You will have to adjust your cable and needles to knit in the round using the Magic Loop method. I usually split the top of the foot stitches in half, gently pulling the cable out slowly moving the stitches onto the needles. Remember to keep your working yarn in the back, sliding back needle out of stitches bringing it to the front needle to knit.
You are ready for the gusset decrease section of your sock. I will be publishing a photo tutorial for that section.