Google Help Pages
- Editing Pictures - http://picasa.google.com/support/bin/topic.py?topic=14190
- Resizing Photos - http://picasa.google.com/support/bin/answer.py?answer=13821&topic=14191
- Rotating Images - http://picasa.google.com/support/bin/answer.py?answer=39035&topic=16092
- Exporting Images - http://picasa.google.com/support/bin/topic.py?topic=14199