Hi Michael, welcome to Javaranch!
No, there isn't a forum especially for Head First Java. For specific questions about Java you're probably best off posting them in the Java In General forums (beginner/intermediate). For more general stuff about the book (like who is that babe on page ...?! or when is the next edition finally coming out?
) you're probably better off here in the Bunkhouse Porch. Whatever you do, though, you'll be taken care of.