Help my family become vegetarian?

My husband and I recently decided to go vegetarian, well actually we decided to reduce our meat consumption and stick to veggies, fruit, grains, and fish. We have been grappling with the idea of reducing our meat consumption to once or twice a week and limiting our meat, milk, and egg choices to free range and earth conscience animal raising methods. Here is the problem, we where both raised in families that considered meals to be meat and two veg with an optional starch, and we don't know where to go aside from PB&Js and Spaghetti sans meat. We need help! If anyone can suggest some ideas or even better websites that can help us adjust and explain our new lifestyle to our kids who are 3 and 6 we would greatly appreciate it. Also, recipes or cookbooks would be great too!