This old article by Paul “Stokeman” Stokes just made it’s way across my desk. Here’s the beginning of it:
The front to back (F-B) is known as the trick that separates the men from the boys or takes women to the world level of the sport. Even at the National Championships there are many competitors that perform the back to front but very few outside of the open division perform the front to back. It’s a trick that every barefooter wants right from the start. This trick is also widely thought to be a very difficult trick. I’m here to tell you that this is an easy trick when #1 you’re ready for it, #2 you go about learning it properly, and #3 you have persistence.
If you want to read the rest of the article, follow the link. I think everything is current except for Paul’s contact info at the end of the article.