Did you know that you can make crochet rows without the foundation chain? It was news to me until very recently. But bloody 'ell, what a brilliant concept! The reason this is so great is that when you make a foundation chain first, it can sometimes screw with the tension at the beginning of the project, making it tighter than the rest of it. The ripple blanket I made last year is an example of this. But I had no idea, then, that it didn't have to be like that. Mad woman that I am, I'm actually considering frogging it and doing it all over again! ;-)
Anyway, here's the tutorial. I've made it with double crochet (US term), but it can easily be adapted to any stitch size. If you have any problems or questions, don't be shy, I'd be happy to help.
1. Make 3 chain stitches.
2. Yarn over and pull a loop through the first chain (just like if you were making a double crochet stitch).
3. But in stead of finishing the double crochet stitch, pull another yarn through the loop closest to the tip of the hook, to make another chain stitch.
4. Then finish the double crochet stitch like normal.
5. You now have double crochet stitch with an extra chain at the bottom.
6. Yarn over, pull loop through the extra chain, pull yarn through this loop and then finish the double crochet stitch. Repeat this until your row is long enough.