It depends. If you are new to gardening it’s probably best to start small, growing just a few things. It’s a good way to learn and you can keep learning more each year.
The learning curve for gardening depends a lot on how big of a garden you are trying to have. Your chances for success are higher if you don’t try to learn too many new things at once. If you start with tomatoes and peppers, that might be enough for a first garden. The next year you could add one or two new kinds of plants.
If you have questions about your garden a really good place to ask them is at GardenWeb.com (also listed in my favorite sites section of the side bar.) They even have a forum just for tomatoes! Their regional forums are really helpful to learn what gardeners in your section of the US have had success with in their gardens.
Click title for link to article by Carrie Kirby at WiseBread.