I did the same thing when my little guy was on the way and was SOOOO glad I did it! A great resource is http://www.savingdinner.com/index.php She has some freezer menus that are easy to assemble at home and are an affordable, delicious way to stock your freezer. It is worth the expense as it comes with your shopping list, food prep list and then the assebly & cooking instructions so you don't have to guess about anything. She takes the thinking out of it.
Here's another site I found a while back when I was getting into this http://snider.mardox.com/OAMC.htm
I recommend a place like woodman's or meijer for getting your food for the shopping, woodman's in particular is great for inexpensive meat.
Congrats on your new baby and for thinking ahead!