Permaculture garden

Does anyone have any permaculture advice for Kerenza aside from the how to posted on the blog previously…

Hello, we live in Durban and would like to start a Permaculture veggie patch. I hear that you start above soil level, please can you tell me if I have this correct:
First layer: thick cardboard; next layer: straw then vegetable scraps then soil. Do you put something around the edges to keep it neat? How high should each layer be?
Do you have any advice or an info sheet please?

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