Lynda.com has release a tutorial about Adobe Apollo.
All the basic to make a simple application are explained by Mike Chambers:
If you got question you can join the apollocoders groups.
If you want some example, codes and tutorial you can give a try to Everything Flex : Apollo Central (by Rich Tretola)
There are already tons of resources on the Net. But I guess it’s a good start to have fun with Apollo. I’m looking forward for some more free time. Or the dream: work Apollo at work 😉