I can hear you thinking that you have no clue about growing veggies. The truth is that you will be able to easily learn enough to be growing useful crops really quickly, and every session spent in your garden teaches you even more. You'll learn much that's unique to your own spot, like local soil conditions, your specific aspect in relation to the sun, and oddities that relate to your local microclimate. You'll learn most of this by getting out and giving it a go.
The taste of home grown veggies is immensely superior to that of the commercially grown produce. Have you heard individuals complain that tomatoes no longer have any taste? They'll have when you grow your own - you'll never taste better. The lack of taste with the commercial crop isn't all the fault of the growers, as they're under pressure to produce a crop, of unvarying size and color, to the schedule of the wholesale market, and finally the supermarket. You set your own schedule.
The freshness of your own crop is a huge plus. Veggies I've bought from the supermarket, and stored in the refrigerator, have started to become inedible after a couple of days. I've had home grown produce still fresh in the refrigerator after two weeks!