I think this is an interesting website he might like
http://www.indigogroup.co.uk/foamycustard/index.htm
and it'll give lots of leads.
Personally I love urban myths, modern folklore - I mean yes I suppose you've got to read all the older discussions, but if you can think about it all with an eye to the terms of your own culture, that's got to help hasn't it. Partly because it's pretty impossible to think yourself into someone else's cultural shoes. Maybe there are universal things that are important to you that are important to everyone, in other times and cultures. Or maybe there aren't. Dunno. I think there's probably a few though, just because we're all biologically the same with urges to eat, sleep, shag, create stuff, and avoid dying.

I've not read this
http://www.hoap.co.uk/explore.htm#ExMy
but I imagine it's very good. I've just read the 'explore fairy traditions' which is Excellent. You might imagine from the titles that they're rather 'introductory' and shallow but they're not at all. There are apparently some excerpts on the foamy custard site.