Last summer I also started growing tomatoes. Amazingly, they did really well on our balcony at the apartment. I grew "Little 100s" and a larger type of tomato plant. I would suggest growing smaller tomatoes - this summer I have 6 grape tomato plants. If you grow a larger tomato, you'll need a lot of plants to yield enough tomatoes to make it worth it. I think we got 4 tomatoes out of our big tomato plant last year. There are also a lot of hanging varieties that do well on porches and balconies. Our tomatoes grew most of the summer last year. We loved going out and picking fresh tomatoes for salads when we had guests. Yesterday I noticed that our plants now have little green tomatoes on them - I can't wait until they are ready! This is a picture of one of my pots this year.
On a separate note, Katie G., who has sent in some wonderful recipes that I've published on the blog, wrote this wonderful article for We Heart This. We Heart This is a fun on-line magazine and forum website that covers a plethora of interesting topics. Katie's article was published for Mother's Day.