Basic Socks for

Materials

Cast On

Cast on 0 stitches using the long-tail cast on (or another cast on if you prefer.
Divide the stitches evenly on 4 needles.
Join, being careful not to twist stitches.
Place marker at beginning of round, between needles 1 and 4.
Knit K2, P2 ribbing for 2 inches or desired length.
Change to stocking st and knit until sock measures 8 inches or desired length.

Heel Flap

Now knit the heel flap:
Divide stitches for heel flap.
Knit 0 stitches (to end of needle 1).
Set 0 stitches aside (on needles 2 and 3) for instep.
Turn work. S1, and purl back -1 stitches (all the stitches on needles 1 and 4).
Knit heel flap in heel stitch:
Row 1: s1, k1 across.
Row 2: s1, p across.
Repeat until heel flap is square (about 2.5 inches).

Turn Heel

Sorry, you need to choose a heel type.