I used Hypnobabies home study course. I also tried a hypnobirthing class but only went to one day. I wasn't impressed, compared to Hypnobabies. Hypnobabies is fabulous and has a lot of support, including text, a birth partner support handbook, the CDs & an online support group. I didn't use all of it in the birth with DS1, but what I used was incredible. I have had 2 mostly drug free births based I what I learnt (a bit of gas with Ds2) and I wasn't even using it properly with DS2.

The supporting text covers self hypnosis, the physiology of birth, nutrition, affirmations. It's fabulous. I also think it's better value for money, given the Calm Birth class we went to was about $400. Even with shipping, Hypnobabies is less than that.