Frederick Van Johnson has started a training podcast -- episode 2 is out today on shooting great landscapes. Frederick is a terrific photographer, and great trainer, so if you just picked up that shiny new DSLR and you're aching to get the most out of it, this sounds like it might be a good place to start.
Oh, and he's a great marketer too. If you want to hear more of him, check out Ep 12 of The Naked Marketers. He's awesome there, too.