I came out to my parents back in September, and even though it took them awhile they've fully accepted it. I recently came across this guide for parents, and I emailed it to them. I just got off the phone with them, and they said it was a good primer on LGBT issues and is making them curious about learning more. Hopefully someone else will find this helpful. My apologies if it's posted on here somewhere else already. http://community.pflag.org/document.doc?id=353
It's a good resource indeed. It's good that you have posted it, I'm sure it'll help others too. Glad to read that your parents have come around.