Wow, are you sure about this venture, Amber? How many containers do you have room for outside your apartment?
You need a TON of tomatoes to make enough sauce to can.
My experience (and I had a big garden in Salt Lake when I did this) was that after all the growing, harvesting, peeling and cooking, the small amount of (frozen) sauce I ended up with from about 25 plants was not worth all the effort AND (adding insult to injury) it really didn't taste any better than the store-bought sauce even with my home-grown herbs added. Plus, I'd used my whole garden space on the sauce tomatoes and so we didn't have any fresh tomatoes to eat that summer and everyone was mad at me about that . . .
My advice? Grow tasty tomatoes to eat fresh, because you can't get them at a store and buy a good quality organic sauce (Trader Joe's is wonderful).