From "The Yarn Yogi Blog":
What's that you say? It's Wednesday, not Tuesday! I know - deal with it...
I absolutely love Foundation Stitches. A Foundation Stitch or Chainless Foundation, is making a foundation or base chain and sc or dc (tc, dtc, etc) at the same time. It makes for a stable yet flexible foundation for a crochet garment or accessory and it saves a bunch of time. I have used this technique in my Angel Sleeve Cover-Up Pattern and will be incorporating it into my next, as-yet-unnamed, shrug pattern. Doris Chan uses it in all of her patterns.
Here's a video of Foundation Single Crochet or Single Crochet Base Chain:
Foundation Double Crochet or Double Crochet Base Chain:
Treble Foundation Crochet:
Half Double Foundation:
So, what do you think? It really makes starting a crochet project faster and easier once you get the hang of it.