Here is a sample vegetable garden layout, courtesy of Michigan State University.  This is just a basic plan, not accurate for every climate zone, but a good starting place as you begin to plan your vegetable garden layout.  If you live in the south or southwest, you can plant much earlier.  You may want to plan successive plantings a couple of weeks apart to keep the vegetables ripening all summer long.

Here is a great link to a free vegetable garden planner!

Take your time as you plan your garden.  Check out video #9 in the collection to the right. 

You will see another presentation — quite different from the one above — of a vegetable garden layout.