You don't need a lot of space for your vegetable garden, but you do need to make sure your plants will have access to sun, water and good soil every day. Keep in mind that most vegetable varieties need at least six hours of sunlight per day to grow healthily. This is important when choosing where to plant your veggies. (Think about the movement of the sun and how much direct sunlight or shade your plant will receive). You might also want to try growing your vegetables near to your outdoor tap so that you don't have to worry about having trouble watering the far corners of your garden. And lastly, make sure you check your growing space to see that it is good soil -the better the soil, the better the taste. If you don't have naturally good growing soil, try a synthetic peat-based mix with vermiculite. You may also add compost or slow release organic fertilizers at planting time to keep your vegetables fed for the whole growing season.
*Tip: You're growing your vegetables for consumption at your dining room table, not for the stomachs of all the critters living nearby. Make sure you buy or build a fence to keep any unwanted company out of your growing space.