whatever yarn you have, look at the label for the crossed Knitting needles, and go with the needle size written under them (if your yarn is from Walmart its either 11 or 7 (I have no idea why)
I used size 11 needles with some Fancy yarn I got there and made the worlds #1 MOST ugly scarf
but I did learn what I needed to know in order to make better looking scarves :XX:
then I found little kits that taught me to do ONE or two new thing each time
then I looked at books till I found one that made sense to me
now I M addicted like the rest of us
ecb