Sorry you guys had to have such ouchie wake up calls, but sometimes that's what it takes to get us started right?
You will find lots of support and helpful suggestions here at 3fc. You can just get started and figure out the details along the way. You don't need to know everything right now, there's a lot you will learn along the journey. Today, start moving a little, start looking around for a plan you feel you can live with, stop eating any junk or calorie-dense but not nutritional food, eat a lot of veggies. Eat some lean protein, whole grains, lowfat dairy products, fruit. Start drinking water. If you are drinking anything with a lot of sugar, try giving it up or cutting back on it. Or maybe you want to journal your food for a few days so you can see any patterns or bad habits you can focus on changing. good luck to you both!
Life's a journey, not a destination.
It's easier to stay on plan than to get back on plan.