Hello, and welcome! One of the definitions of "whole food" is to eat it when it's as close to its natural state as possible. So, not knowing how to cook won't hinder you from eating whole foods!
Do either of you garden? It might be worth trying. It seems to be very rewarding for many whole-foodists.
I know that (depending on your diet) switching to whole foods can be a very drastic change. Do what works for you, what you can repeat day after day. For me, it means eating mostly vegetables, fruits, small portions of meat, and whole grains. Get used to chopping vegetables.