Determine the size you will have available for your patio garden ensuring it is facing south for best sun exposure (5-6 hrs a day)
The larger the container, the better. It is recommended to use non-porous containers in order to conserve moisture and nutrients that get absorbed by clay (porous material). There are also raised planter beds and large individual pots.
The ideal potting mix is a soilless mix or soil mix, because it is well aereated and lightweight. Traditional garden soil is too heavy and compact and not compatible with the needs of vegetable plants.
You can try tomatoes, lettuce, carrots, and herbs to start.
Frequent watering, especially during the summer, is essential. Enjoy!