Create Facebook app on website https://developers.facebook.com/apps
After creation you will get ID (
App ID) and password (
App Secret) to your application.
"Access Token Toll" tabs
Here you can get autorization keys - "access_token" parameter's value in in queries to Facebook API
App Token = app_id|app_secret
In order to get "User Token" press
"need to grant permissions".
More about app authorization in queries to Facebook API in ["Access Tokens"] section (https://developers.facebook.com/docs/facebook-login/access-tokens#apptokens).