This is a website where you can organize and plan your garden, get
updates on what's going on in your area (mine currently says, "Sowing:
Tomato, Sweet Pepper, Bean," for example), and hear from all sorts of
other gardeners. It will even keep a timeline for you, although a
small fee is required for that service. There is an "Answers" page,
and you have access to other gardeners' journals, which can be
searched by USDA growing zone.
http://cheapvegetablegardener.blogspot.com
This is a GREAT blog. The author is very knowledgeable, and he is the
king of do-it-yourself garden gadgets for indoors and out. His most
recent posts tend to be about seed saving and how to harvest seeds,
which I think is great for those who want to grow sustainable
varieties of vegetables. He reviews pest control products and other
commercial garden products, so for those who don't know what to use,
this could be a really good resource.
I bought my heirloom seeds and neem oil from this website. They have
been great to transact with so far, have lots of varieties of
vegetables available--tomatoes in particular--and tons of supplies for
organic gardening.
I'll add more later as I get back into my "Where did I find that link
last summer?" groove. These are definitely my top picks, and I hope
folks find them helpful!