Please visit the OAuth 2.0 page for the explanation. This page updates with the latest information. A separate page was created to provide the most updated information to you.
The new comers may be so reluctant to go through a lot of text to know what is OAuth 2.0. This post is for you, my dear folks. Enjoy it and give your kind feed backs to improve the presentation. Find the explanation, video and a simple demonstration of OAuth 2.0.
You don't need anything else to start working with OAuth 2.0. Just forget everything else and read. You will learn more when you started working. Enjoy it. Cheers!!!