If you have no real garden area to speak of, maybe just hard standing, gravel or some such area, it is still possible to create a garden space which is easy to maintain and looks wonderful.
Ensure you use planters which will ensure adequate drainage. Try not to rush to a garden centre and buy everything at once. It is far better to allow, even a small area, to grow organically - add to it gently. Have a plan and choose plants that won't block the path to and from your house. These areas are great for having a few pots dedicated to growing kitchen herbs. tomatoes and such like.