If you want to try this pattern, cast on an even number of stitches which when divided by 2 is uneven, e.g. 14 or 38 or 62. This makes the edges look neater.
Row 1: K2, P2, repeat until last two stitches, which should be K2
Row 2: P2, K2, repeat until last two stitches, which should be P2
Row 3: same as Row 1
Row 4: same as Row 2
Rows 5 and 6: K
Repeat 6 rows for pattern.
If you're interested in knitting shawls for a good cause, check out the Prayer Shawl Ministry--but I must admit I don't like their suggested pattern. It's not very distinct. I like a textured pattern you can see!