I don't think many people will grow their own food if (1) They don't know what food is, and (2) They don't know how to cook it. So, the first bricks I would give people are the ones my husband first took: learning what food is, and how to cook it.
Read the ingredients in your foodLearn how to store common veggies and fruits: carrots, potatoes, onions, lettuce, apples, berries, peas, tomatoesIf you don't have a skillet and a pot, go to the thrift store and buy stainless steel ones.Get silverware and plates at the Thrift store, if you don't have anyFry an egg(NOT necessary for vegan/vegetarians)Cook meat from rawSoak and prepare beans from dry stateMake a stir fryMake a soupInstall low-water nozzles on sinks/showerGet a stainless steel or glass waterbottle
Very early level:
After these skills are learned (or if they are already learnt), one moves on to the skills of growing things. These are ones I think people can do while still in an appartment. The digging and the hammering are skills. I remember when I first tried to swing a hammer. NOTHING happened. I swung that hammer for 10 minutes, and couldn't get the nail in. When I tried to dig a trench, I had no luck, because I had no idea how to dig. These are skills that a lot of people, if they were raised in the city (or even not, as is my case) just don't have.
Buy potted herbs and grow them in your window sillMake tea from leaves from edible weeds. Start with dandelionDig a hole with a shovel Wear a coat or sweater inside during the winterHammer nails into a boardTurn off the lights in rooms you're not usingClean your counter and sink with vinegar and baking sodaVisit thrift stores for clothingFind a baking sheet at a thrift storeUse reusable bags for grocery shoppingCook one thing from scratch per week
Make cloth napkins, or get some at the thrift storePlant a start of something that grows REALLY EASILY in your area, like raspberries or strawberries.Cool your house at night by opening your windows (if you don't live in a high-crime area)Accrue a few fans to help keep you cool without as much ACCook three things from scratch per weekCombine shopping trips--if you're going to one place, think of where else you need to go that's in the same area. And, if the errand can wait a day, let it wait in case you think of other things you need!Make or get cotton washrags to wipe down messes
That's all I've got so far: I've got to go to bed!