I’m assuming most of you ladies are in the States. You can check out the website http://www.boma-usa.org/ and click on the instructors link. Also, almost everything you need to know is in Dr Billings book, “The Billings Method”, which is available in most public libraries.
If you’re not in the States, then you can go to the official Billings International website at http://www.woomb.org.
Hope this helps,