A provisional cast-on keeps cast-on stitches “live” so that they can be knit later. It’s a very useful technique when you’re not sure what kind of edging you’ll want or how long to make something. Get the how-to from Purl Bee.
Hey fellow knitters!! Have you ever had to cast on hundreds of stitches and then have to do it AGAIN and AGAIN because you didn't allow enough yarn? I certainly have... Annoyo! Verypink.com shows you two tricks to prevent this from every happening again. (FYI, this is an awesome knitting help site.)
the yarnover bind-off: a nice even edge that stretches and lays flat even on Stockinette stitch. This technique works great on toe-up socks or on top-down hats or sweaters — anything where you need a stretchy bound-off edge on a cuff.