This pattern is more of a recipe than a pattern.
If you are going with a worsted weight yarn, you probably want something at least 180 yards (or more). For sock/fingering weights, I would so with something at least 350 yards or more. No one likes running out of yarn!
I knit up a simple little shawlette with some handspun and I describe on my blog how I did it.
For more details on the yarn type, etc. you can visit the blog page that has the pattern in it!