My brother's currently becoming interested in conservation while studying for a degree in geography. He's expressed a growing interest in nature-based religions, but, to quote, the people he's asked for information think he's 'taking the piss'. I know there's probably a lot of dross to avoid out there (teen-witch love spells etc.), so I'd be very greatful if you wonderful folks could recommend books that give good information about (preferably British) pagan, druid and witchcraft traditions. He's not taking the piss, honest!