Sure, but since scarves generally run about 5 feet long, you might get a little bored. You could get a smaller skein of some inexpensive yarn and just do a sampler. CO about 20 stitches, then run through all the Videos - knit, purl, increases, decreases, the ones on the tips page for different stitch patterns. After a while you may have half a scarf anyway and you can finish it up however you want.
sue- knitting heretic