There are a lot of resources available on the internet regarding Selenium. You can find online tutorial series- both as video or as text. Since it is one of the hottest testing tools right now, and is supports various languages, so you will have no difficulty in finding tutorials, whether it is regarding Java, or Python or Ruby.
But for a beginner like me, it becomes very difficult to search each and every resource individually on the web, since they are too segregated.
So, I have brought together a list of these resources and I will list them out here, so that if you have any question or doubt, you can go through these links and solve or find answers to your query.
List of Websites, with a comprehensive series of Selenium tutorials : Link
List of resources, which have solution to particular problems with Selenium : Link