Hi S.-
For me, the key is LABELING!! Get yourself some good sharpies and write down what is in the container and at least the date so you can cycle the older meals (or ingrediants) out first. Some stuff, I even tape actual directions on the container so my husband can take it out of the freezer and make the meal before I get home.
The other thing I like doing is freezing the meals in foil pans from the Dollar Store or Party Store. This makes cleanup really easy - defrost, reheat and toss!
Last but not least, take a look at a group called "Homemade Gourmet". They have spices and stuff that allow you to make a variety of freezer meals at a fraction of the costs. Right now I attend a once a month group that meets and puts freezer bags together with the HG spices. It is only $5.00 per meal and I've been making them in anticipation of my second child arriving. I have to supply the meats, but each meal can be grilled, crockpot or roasted in the oven. I figure if I add a frozen veggie, it will be easy for me in my post partum state. The spices can be purchased seperately from the group I meet with and there are other recipes that each spice can make. So far I have about 8 meals in the freezer.
Good luck!
~C.