I think I can safely say I have little experience, if any, in these activities.
My parents used to grow e.g. strawberries, rhubarb, lettuce, potatoes, plums, and I helped with this when I was little. They also did some preservation of these foods, but I wasn't involved in that part of it very much.
Potatoes can be preserved in a dark, cold and dry cellar. Plums can be preserved in an airtight container after briefly boiling, I think? Strawberries can be cooked briefly with a lot of sugar and then frozen. You'd need a freezer though.