Drupal Service/REST Tutorial

https://www.drupal.org/project/services
https://www.drupal.org/node/113697

REST Drupal from Alexandru Badiu

http://drupal.stackexchange.com/questions/6551/creating-a-node-using-services-6-3-rest

Drupal iOS SDK – CSRF token
http://security.stackexchange.com/questions/25900/how-does-a-csrf-token-prevent-an-attack-and-how-can-i-safely-use-avoid-it-for-m

Drupal iOS SDK

Creating iOS Applications for Drupal from workhabit

https://github.com/kylebrowning/drupal-ios-sdk/wiki/drupal-ios-sdk-2.0

Chinese Tutorial
http://avnpc.com/pages/import-export-drupal-data-by-restful-service

2-Legged OAuth
https://www.drupal.org/node/1871498

Using oAuth with the Drupal iOS SDK
http://www.workhabit.com/blog/using-oauth-drupal-ios-sdk

Service and Android
http://mobile-grid.com/workbench/drupal-servicesrest-and-mobile-devices-using-android-example