This is the pattern I used for the scarf. The hat says it's for an intermediate knitter, but I think an ambitious beginner could do it without too many problems as long as you can do a knit and purl stitch and have a little patience. This is a great pattern to practice cables. Yes, I realize I could have condensed the instructions a bit, but I like to have each row written out so I can check it off as I finish. That way if I have to put the work down for a bit I can find where I left off pretty easily.
You can use any worsted weight yarn. The original pattern for the hat says to use Stitch Nation by Debbie Stoller "Bamboo Ewe". I used Vanna's Choice. 3 balls (3.5 oz each) total for one hat, scarf and mitten set. (The scarf alone uses about 1 1/2 balls.)
Size 9 knitting needles
Cable Needle or other spare knitting needle
Large eyed needle or crochet hook to weave in ends
P = Purl
K = Knit
CN = Cable Needle
2/2 LPC = Slip next 2 stitches to Cable Needle and hold in front of work; P2, K2 from CN
2/2 RPC = Slip next 2 stitches to Cable Needle and hold in back of work; K2, P2 from CN
2/2 LC = Slip next 2 stitches to Cable Needle and hold in front of work; K2, K2 from CN
2/2 RC = Slip next 2 stitches to Cable Needle and hold in back of work; K2, K2 from CN
sts = stitches
WS = Wrong Side of work
RS = Right Side of work
Gauge is not real important for this project. Mine finished about 58" long. If you prefer your scarf a little longer then do another pattern repeat before ending with rib pattern. If you want the scarf a little shorter then do fewer pattern repeats.
Cast on 32 sts using long-tail cast on (or your preferred cast-on method).