I am just starting to go off the grid, but I have a lot to learn about growing my own food.
Definitely. Agriculture is used to sustain life. You will need to learn how to cultivate and breed animals, plants, and some medicinal plants.
Well, luckily I am vegan, so I am just tryinf to learn how to grow vegetables and fruits.  Do you know anything about that?
Not really but you could speak with a agricultural scientist. That is someone who studies agriculture.
I wonder where I could find someone like that.  Do agriculture scientists go to a special school for that?
Possibly. Agriculture dates back to thousands of years. It has been driven by different cultures, technologies, and climates.