If you book onto a course you get the cd and the book as materials. But if you want to do it on your own then you will need to buy them separately. The Marie Mongan book is the one to go for.
If you can afford the course and there is one in your area I would totally recommend it as it brings it all together, but if you need to go it alone you would still benefit from it.
A good place to start is here:
http://www.hypnobirthing.co.uk/xx
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