All great tips eve
I've been thinking of doing this also in the future, once I get some suitable land.
I've been thinking that it would be a good idea to compile a list of all the foods you could grow given a particular climate, soil, space and available amount of water, for each season of the year, so that you always have fresh foods and herbs from the garden, and follow the natural cycle of the seasons to decide which to consume at which times and in which quantities.
Another thing you may consider is visiting organic farmers' markets and trying out their products, then when you find something you like that might be suitable for your garden, ask to purchase seeds from them. Or oftentimes you can get the seeds from the product itself, if it's a fruit for example.
Although many fruits are not grown directly from seed, but that's something else to ponder about, and maybe we shouldn't be consuming those types of fruits in vast amounts, since they would be very rare if not nonexistant in the wild and are so different from their wild counterparts?