This article talks about most of what I know (i.e. not very much). I've not read any of the original literature except for One
Straw Revolution, but most of what I have consumed is supported by the basics here:
https://www.permaculturenews.org/2017/09/05/permaculture-design-5-steps/
A lot of the design principles are posted on similar articles, but the free ones tend to be scant on examples.
Think about permanence in your design. Big things like earth,
water are first thoughts. Long term things like structures and
trees are later. Garden beds and seasonal crops are last. Or something like that. Also think in terms of proximity to your home and ease of access when laying things out. Use land contour to your advantage. Don't ignore margins.
Just a bunch of principles I've absorbed, probably overly superficial stuff you already know too.