A garden planted in pots won't feed you for very long. Read John Jeavons's book "How to Grow More Vegetables..." (Berkeley, Ten-Speed Press, 2002) It takes from 4,000 to 15,000 square feet of garden area to feed one person, the lower number using Jeavons's 'Grow Biointensive' method. And if you're new to gardening, it will take a while for you to learn the required skills.