Three acres is a big organic garden, especially for a beginner. I would get the basics for tilling, a plow and disc or rototiller, worry more about learning about growing plants organically.
It doesn't take much work to get the ground ready to plant. It can be a lot of work if you get some kind of blight or insect that attacks your plants; being new you could loose most of them before you even knew there was a problem, especially if you don't use hybrid seeds that have resistance to a lot of common problems.
Start small, learn the basics of organic gardening, enlarge your garden as you go. I actually would be surprised if you ever decide to use the entire 3 acres unless you intend to sell a LOT of produce, and do a LOT of work.
It doesn't take much work to get the ground ready to plant. It can be a lot of work if you get some kind of blight or insect that attacks your plants; being new you could loose most of them before you even knew there was a problem, especially if you don't use hybrid seeds that have resistance to a lot of common problems.
Start small, learn the basics of organic gardening, enlarge your garden as you go. I actually would be surprised if you ever decide to use the entire 3 acres unless you intend to sell a LOT of produce, and do a LOT of work.