I am confused at what is a no dig garden. I have a normal vegetable garden and was watching a programme (BBC Gardener´s World) where the head gardener of a major garden somewhere in the UK said she practised No Dig Gardening. Basically she put about 400mm (16") of well rotted horse manure on the garden annually and let the worms pull it down and that was it.
Looking for more information I came to your website which is dealing with raised bed gardens. More complicated than the above.
Can you please explain if what the lady said is practical or whether I have to move over to your system of layering as illustrated.