I browsed a little further and their sitemap seems delightful. Lots of info. It just makes me wonder if there are other free websites and online pdf books like they mention that would be helpful.

http://abacus.etherwork.net/sitemap.html

Thank you Tamsyn for asking this question. It's a question that's been on my mind after reading the other mental math posts that have cropped up lately on the forum. I too would love to know about books, websites, and other resources for those of us who do not have a Soroban/Anzan school in our area or who cannot afford some of the online schools mentioned on the Brillkids forum. I'm completely new at this and will be starting from scratch, but I'd love to teach my children how to do it and have it be as effective as some of the schools we've been reading about.

I did a little digging on the internet and so far have only found this. I don't know if it will help at all, but here's an interesting link and some mention of other books:

http://abacus.etherwork.net/soroban/

If anyone else more information, please, please, please share with us. There's got to be lots of other parent's wanting to do this as well!!!