redhead - the hypnobirthing 'movement' as such was started by Marie Mongan, so she's kind of the authority on the matter, however I would say that material by any accredited hypnotherapist should be fairly good. The woman who is running the course I'm to do has written a couple of books, I think - just check they're accredited and read the reviews.
I recently re-read 'NightWatch' by Sarah Waters - a slightly baffling book to start with, but fascinating for showing a side of history that doesn't often get representation in fiction (lesbian view of WW2 anyone?)
I would highly recommend Elizabeth Berg for sheer beauty of writing. Her style is so simple, but so moving and I feel like she manages to capture those fleeting moments that break your heart with such truthfulness. My favourite book of hers is 'Never Change', but be prepared for a bit of a cry.
'The Sweetness At The Bottom Of The Pie' amused me - it's a cross between a detective novel and 'I Capture The Castle' - very whimsical, but intriguing with some strange family dynamics.
'The Guernsey Literary and Potato Pie Society' is also worth a read and apparently so is 'The Help', though I haven't tackled that one yet...
Oh well, hope this gives you some ideas - your tastes and mine don't necessarily collide, so read the blurb before purchase! I would recommend 'Never Change' to anyone with a heart though - the most beautiful and moving book. Won't be offended if you ignore all other suggestions however :-)