Ravelry. Oh my goodness, it turns out that the book has only a fraction of the possible stitches. There's Honeycomb and Entrelec, Wiggle stitch and Bobble stitch, Mitred squares and Lacy shells..... Some of the stitches puzzle me a bit - why would you crochet fabric that looks like knitting, when it would be so much simpler to knit it??
I also found a website dedicated to Tunisian crochet called My Tunisian Crochet, which has a wealth of information.