Do you need to increase or cast on more stitches? If you need to cast on, use either of the single strand cast ons. I usually use the backward loop if it's only for a few stitches. You can find them in the Basic Techniques section above.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog