I'm certainly not an expert on the subject, so I'll leave you with two of my favorite references:
Organic Seed Alliance
Seed to Seed, which you're likely to find in your local library.
And there are of course countless sources to turn to on the internet.I encourage you to give it a try. The links above have wonderful information on how to get started. It really isn't as difficult as it may first seem, and once you're successful, it can be such a rewarding hobby!