FYI, since we hope you'll be spending a lot oftime at KH, eventually you'll realize that KK thinks everything is about HER.
I try to roll my yarn loosely into a pull square-ish ball, that way I can loop the ball around my wrist as a holder so I don't have lots of strings hanging. One reason a center pull ball is preferred over the outside pull ones is that the yarn can get tangled together; if you can't get your yarn into a center pull ball, or you can't FIND the center,you can slip the yarn into one of those mesh plastic vegetable bags; that will at least keep it from unwinding all over the place and getting tangled. Or stick the yarn into an empty oatmeal container and pull it through a hole in the lid. OR you can let KK's dog howie hold your yarn, he LIKES to play with yarn... and he's very helpful.