There's a good pre-pregnancy one called 'The natural way to better babies' - lots of info about herbal rememdies etc but even if that is not your thing - lots of good avice about diet etc when TTC.

I like 'Great Expectations' as a pregnancy book. It's a big thick one with week-by-week stuff and fully indexed info on everything from safe medications, pregnancy ailments to labour and delivery. Only downside is that it's an American book.

Good luck and hope your TTC journey is short!