Permaculture

I may of started a thread like this before (I can’t find it if I did ) .

Permaculture fascinates me. I think I love the principles of it. I really need to know more/everything about it. 
I’m thinking it might be the way forward for my new veg garden. 

So can those that already do garden in this way please explain it ( as if talking to a 4 year old ( and not a very bright one   )) . How you go about everything. 
Also any books, blogs, websites , celeb gardeners that you can point me towards .

In my head it’s all your veg planted together with lots of herbs & companion flowers. Planted big blocks.  I’ve always wondered how do I get to stuff that’s really for harvest in the middle without crushing other plants. And what else gets done. It’s not just that simple is it? 
You see this is why I need help   .