Web API 2 Authentication and Authorization

General information for the business: Academic
Description of requirements/functionality: I am looking for some one who can help me. I am planning to develop a web api2 web service (Json), which will be consumed by both mobile clients and browser clients. Now let us say a mobile client wants to consume my web service. So I need mobile client to be authenticated and authorized using external providers (facebook and google using oauth2). Once authorized, mobile client will call web api2 web service. The web api2 service should be able to know that it came from the valid client and perform the action. If not authorized, it should not deny the access. The same applies for web browsers also. I have found that thinktecture identityserver v3 is good for my purposes. I need the following.

1) Write a sample program which uses thinktecture identityserver v3 with facebook and google authentications.
2) Write a sample client (which covers both mobile and browsers) to authenticate using thinktecture identityserver v3.
3) Write a hello world web api2 service, which will validate the incoming requests and deny if not valid.

Also I need step by step guidance to explain me how the program works. Also I need to know how to add claims and disable or enable users.

This is urgent. Please respond fast.
OS requirements: Windows
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