title: How to add Social login services from Google, Facebook, Yahoo etc. to my website?
body: <p>I want to add the following buttons to my website for providing users with option to login using more services like Google, Facebook etc.</p>
  
  <p><img src="https://i.stack.imgur.com/JhwNZ.png" alt="Login Options"></p>
  
  <p>Please answer the following questions:</p>
  
  <ol>
  <li>How can I add various services like this <strong>free of cost</strong>? (Please note that I do not want to use any paid service like Janrain and )</li>
  <li>How can I store user information of the user (like email, phone no.) that are stored in the accounts to my database? </li>
  <li>Please provide any links/libraries that can be used.</li>
  </ol>
  
  <p>I appreciate any other information that you can provide. </p>
  
  <p>Thank you!</p>