Any suggestions for books on it? They're training me, but the more I can learn on my own, the better.
Sorry, no suggestions for books.
Do you know if you'll be working with Crystal Reports? Or directly with the Business Objects API? Either way they're both very, very poorly designed and implemented. Good luck I hope you're getting paid well.
Want to set up a testing instance and just play around or build something? They're either not available or horribly crippled. If you can get into a company that is doing it already and you can get access, you will have an easy time learning it (but it's not exactly fun).