Context: A couple of friends and I may be getting ownership of a pretty sizable chunk of land for free, and we've decided that we want to use that land and the buildings on it to address problems like food insecurity, as my area has the highest rates in the country. I'm not totally sure exactly how big the plot is yet, but it can already grow enough food to be self sustainable according to the current owner. It was previously used as a sustainable living project and retreat.
Our plan is to grow as much food as we can on that space, ideally using only volunteers and donated materials so that we can give it to kitchens and shelters for free. With this in mind, what can we do to maximize the amount of food we can grow in that space? We don't want to sacrifice quality for quantity, but we want to feed as many people as we can for as long as we can so quantity is very important.
If you live somewhere with cold winters, this is really fucking cool: https://youtu.be/ZD_3_gsgsnk
YouTube in general is such a good resource for farming and gardening.
If complete self sustainability is a goal, look into Korean Natural Farming (KNF). A lot of cannabis and hemp farmers purport to be having success with this. A guy naned Chris Trump has a lot of tutorials on the subject.
Look into vermicomposting as well.
This sounds like such an amazing opportunity though. Wow. Good luck.