I've just finished reading this:
Is God still an Englishman?
And I found it very instructive. As someone who is interested in faith in England (and the rest of the UK) this book brought home some very interesting developments in the faith of English people. It's written by someone who has been a christian of many and varied hues over the years and now seems to find himself as one who still believes in something but doesn't find organised Christianity very helpful in exploring that belief. I think if we want to talk to younger generations about belief we need to listen very hard to books like this.