For blogpost: http://dhruvb.com/blog/content/tutorial-using-oauth-google-plus-api
For presentation: http://www.scribd.com/doc/65747648/Using-Google-API-with-Python-and-PHP
This tutorial is about using OAuth2.0 authentication method to access data in Google+ with the help of your browser, Python and PHP. It covers the basic usage of API.
The tutorial is bit on “fast track”, so for any queries contact me at @dhruvbaldawa on twitter
For code samples, check out http://t.co/qjN5jHm7