I'd agree with Roberta, I didn't find much when I was expecting twins either, at about the same time.
I think most twins mums just muddle through, and find their own ways of doing things, as most of the usual advice just doesn't apply.
I think a Mumsnet book on multiple births would be a great idea, we could all pass on our tips !!
I found the twins club in my area, not much good. I expected to find these really organised women, who could pass on some worthwhile advice, but just found a bunch even madder than me, who seemed to have lost the plot ages ago !!!