Hi. What's a Knifty Knitter?
I can tell you that if I make a long scarf, I would usually make it about as long as the person it is for is tall, unless I run out of yarn or have just a little left and go ahead and use it up. Patterns should give measurements and how much yarn to purchase. I think knitting is fun. Seeing those stitches on the needle, watching the ball of yarn turn into something I've made still amazes me.
Happiness is catching that dropped stitch while it's still fixable..