Squash will survive the Armageddon. We call that a TON plant. Thrives On Neglect. Don't grow Zucchini or yellow squash though. It's straight garbage. Acorn squash is delicious. Spaghetti squash is bomb. Butternut squash is super versatile. I'd say most importantly, you should grow things you actually will eat though. Everyone grows a million zucchinis but I don't know anyone that actually likes zucchini. They go to waste. If you only love tomatoes, then by god only grow tomatoes. I don't know of any good books tbh. I'd suggest making friends with a seasoned veteran and scheduling time to go help them with stuff in exchange for showing you the ropes and getting their advice.

https://www.almanac.com/vegetable-gardening-for-beginners There's a decent starter guide with basic principles. There's nothing specific to community gardening you really need to know. Just learn how to garden in general and you'll be fine. But maybe look into "mini farming." It's a decent book that covers a lot of what you need to know.