I do work remotely and I have spare time to work on my land. I am developer and i don't like the repetitive work that is why I wanted to create a self sustain s

I do work remotely and I have spare time to work on my land. I am developer and i don't like the repetitive work that is why I wanted to create a self sustain system of aquaponics but I can see the benefits of permaculture. I have planted some citrus trees (oranges, lemons, mandarin and graipfruit) but I never thought I could use the surrounding area for something else. Do you have any resources on permaculture? The only resources I am able to find are commercial ebooks.