I'm preparing my family by gardening, I just (this year) became an apiary (bee keeping) also started Aquaponics which is food and fish, the fish pooh feeds the plants, the plants and the fish, feed me. checkout diyaquaponics.com for some examples of aquaponic systems.
When The SHTF is not a good time to learn how to garden, learn now while there is still food on the shelves.
I started a strawberry patch in between a sidewalk and my garage. Grapes on a Pergalo. I have four chickens that I'm fighting city hall about.
I guess what I'm getting at is you need to prepare for what is to come. If you don't know what to do, just ask yourself, what did people do 150 years ago?