Chevron Pattern stitch.

How to make the chevron stitch? It is very easy!

(multiple of 16 sts + 1)
Row 1 (right side): K1 * yo, k6, k3tog, k6, yo, k1; repeat from * across.
Row 2: Purl.

How to crochet a easy square

Ch 6. Join with a sl st to form a ring.

Round 1
Ch. 3, 2 dc, ch 2, (3 dc, ch 2) 3 times, sl st to join to the 3rd chain stitch from foundation loop.
Round 2
Work 3 sl sts (2 sl sts with the old color, and join the new color in the third) so that your crochet hook is adjacent to the space formed by the closest set of chain sts. Ch 3, 2 dc in space, ch 2 to form corner, 3 dc in same space, ch 2, (3 dc in next space, ch 2 to form corner, 3 dc in same space, ch 2) 3 times, sl st to join to the 3rd chain stitch you crocheted at the beginning of the round.
Round 3
Work 3 sl sts (2 sl sts with the old color, and join the new color in the third) so that your crochet hook is adjacent to the space formed by the closest set of chain sts. Ch 3, 2 dc in space, ch 2 to form corner, 3 dc in same space, ch 2, (3 dc in next space, ch 2, 3 dc in next space, ch 2 to form corner, 3 dc in same space, ch 2) 3 times, 3 dc in next space, ch 2, sl st to join to the 3rd chain stitch you crocheted at the beginning of the round.

Granny squares can be worked at any gauge.
Rounds 4 and Up

Abbreviations:
ch = chain, chs = chains, st = stitch, sts= stitches, sl st = slip stitch, dc = double crochet
My other Free patterns
http://lanahobby.blogspot.com/2009/08/knitting-stitches.html

Broomstick Lace Crochet.