Gardening website recommendations

After reading the thread about the new Anderson's exhibit at Imagination Station, it reminded me that one of my New Year's resolutions was to plant and (try to) grow something edible in my back yard. I am clueless about gardening. I don't know when to plant, what to plant, how to plant, etc... I was always lucky to have family and neighbors that supplied me with garden fresh produce :) Now I want to take on the responsibility myself and maybe teach my kids a thing or two. I'm hoping that if they help plant it and grow it, they will take more of an interest in actually eating vegetables. So can anybody recommend a good website for basic backyard gardening in this region?