Michelle asked what her pattern meant when it said to hold the yarn double throughout (thanks for the question, Michelle). Sally replied that as Michelle had suspected, it means that you hold two strands together as if they were one strand throughout the knitting of the garment. It creates a yarn with a bigger gauge or, if two different yarns are used, creates a hybrid yarn with combined characteristics.
Here is the scarf my daughter is currently making. She calls it Tennis Ball Green, which I think is quite descriptive (this scanned picture is very accurate):

When you hold 2 or more strands, occasionally you drop one strand accidently or only knit through one strand when making a stitch, so you have to pay a little bit more attention. If you look at the three yarns Laura is using, the skinny yarn is the culprit and frequently gets left behind. I’m not sure why so many newbies like knitting with these yarns, except that you get beautiful results with less effort (DUH, I guess that’s a pretty good reason!!). They are harder to work with.
AND, an unsolicited comment from Patti:
“I just wanted to say that I made your potato cheese soup, and my family thought it was wonderful. Such a delicious soup and it is made in under an hour. Thanks for the recipe.”
I am delighted that the recipe worked for someone else. I’ve had it happen that another cook tries a recipe and gets a total flop (it’s happened to me many times!). Thank you for the great feedback.