I've seen many people ask about turning the heel and picking up gusset stitches while knitting socks two at once on magic loop, so I decided to photograph the process and prepare a little tutorial. Keep in mind that there is more than one way to do it, this is just the way that
I do it.
Note: All left and right directions refer to the knitting when the right side is facing you.
1. After knitting both heel flaps, turn the heel of the right sock.
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2. Pick up the stitches for the left gusset of the right sock.
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3. Turn the heel of the left sock.
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4. Pick up the stitches for the left gusset of the left sock.
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5. Knit across both insteps.
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6. Turn and pull out the "magic loop" between the instep and gusset/heel stitches.
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7. Pick up the right gusset of the right sock, leaving the magic loop.
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8. Knit across the rest of the right sock gusset/heel stitches.
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9. You have finished picking up the gusset of the right sock.
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10. Pick up the right gusset of the left sock.
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11. Knit across the gusset/heel stitches of the left sock.
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12. Ta da! Your heels are turned and your gussets are picked up, continue knitting around like normal, decreasing as desired.