These are some of my favorite sites.
RexResearch provides a great list for companion an antagonist plants
Almanac provides a good planting schedule
Gardenate will also help you plant at the right time of the year.
Choose your zone (be sure to scroll down) and a planting schedule is provided for each month.
A radio broadcast on the Prepper Broadcasting Network.
Denob talks about heirloom, hybrib, GMO. At about 20:45 the talk turns to saving and planting seeds.
Another show about gardening from Denob "It’s time to start planning your garden!"
Denob plans to add more gardening shows this summer of 2013.
His archive list is at The Prepared Canadian