How do authenticate and track user session for android user using ASP.NET web api

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C#

Android

WebAPI

i've created a Android application that requires User to Register and then login in order to access certain services. I 'am thinking of using ASP.NET WebApi to do the authentication for username and password and provide some kind of tracking of user. So the User via the Android App will login,be authenticated and then will be redirected to the appropriate services (via controllers).Is there way to do this. Any guidance or articles that can guide me to solve this problem will be greatly appreciated,
Cheers

What I have tried:

I have created a MVC WebApi application and i have added logic for creating and storing password(using SALT).I will then use this SALT during the authentication process.I will provide code if requested. However i was looking for better guidelines to implement this kinds of scenario.Any guides or links are greatly appreciated.
Cheers