If you asked me to name one, and only one, internet resource for all things "genealogy", I would recommend Cyndi's List. Cyndi Ingle has created the quintessential source for information on finding your ancestors.
Tomorrow, she is hosting a webinar entitled, A Guided Tour of Cyndi's List 2.0. Registration is free, but limited to the first 1,000 people who sign in.
If you aren't familiar with Cyndi's List and want to learn more about what it has to offer and how to navigate it, I recommend you attend the webinar. If you are just starting out on your journey, or you have been digging for a while and could use some fresh research sources, Cyndi's List is the place to start.