Zone 5b Fall Garden Planning?

Hi midwesterners. I'm a first-year vegetable garden, and I've learned a lot from Dave's Garden. Despite my bumbling efforts, ;o) I've managed to keep some stuff alive in my garden and I'm even getting some produce!

But I'd like to take a more educated approach to the fall planting. Can any other Zone b people tell me what you're planting and when and whether it's seeds or plants? Any suggestions on what I should start from seed and what I should definitely get from the nursery already started? Thanks in advance for any fall garden suggestions you can give!

http://extension.missouri.edu/xplor/agguides/hort/g06201.htm
This calender should give you a good start to what you can plant

Thanks Dave. That's definitely the right place to start. I got one of these from a local nursery and have been looking over it. Seems weird to be planting cool weather crops in late July and August, but I guess my garden does have some morning shade and maybe I can rig up something to keep them cool during the rest of the day. And I'll keep cruising the forums looking for more insider tips and tricks.