Image by Getty Images via DaylifeThe number 1 rule of any vegetable garden is:
Grow what you like to eat!!!!
Other than that, look for words like bush, dwarf or compact when choosing plants. There are quite a number of varieties that have been developed especially for container gardening.
How many people give up on the idea of growing their own food due to space restrictions or renting? Look no further than this great book on organic edible container gardening. With awesome pictures, you're sure to be inspired to try something new!