I have a container garden and I've been successful planting herbs and veggies.
I have rosemary,basil,mint,cilantro,thyme,parsley and oregano,bellpepper,cukes
yes,cukes(the bush variety)which is suitable for growing in pots,tomatoes,cherry
and roma.
I started from seeds,which I brought with me from the states,along with Miracle Grow.
Use the plastic containers not the terra cotta type which tend to get over heated in the
sun and will damage the roots.It will stunt the growth.
Herbs grow best in partial sun.I have mine in an area in my garden where they receive
enough sunlight and shade to cool them off
Buy some good soil,apply Miracle Grow or if you go to a garden center,I'm sure they have
other type of fertilizer.Apply once,every two weeks,and most important water your container
garden twice a day,morning and evening,since the water evaporates quickly in the hot sun.
If you can prefer the plants instead of seeds,go for it,you will be successful.