I would like to know more about programming 32-bit ARM CORTEX-M2 micro controller. Is there any tutorial or good starting point?

 

http://en.wikipedia.org/wiki/List_of_ARM_Cortex-M_development_tools

 

Thank! Very useful.
Something else, any hint on how to interface/manage the controller to/from mobile apps (iOS, Android, etc.)?

 

Something else, any hint on how to interface/manage the controller to/from mobile apps (iOS, Android, etc.)?

it will require external circuit.

 

I would like to know more about programming 32-bit ARM CORTEX-M2 micro controller. Is there any tutorial or good starting point?

You don't say where you are but contact the local sales office for ST. They regularly offer introductory courses on ARM and usually throw in a Discovery Kit and lunch. Plus, you can meet and talk to their application engineers.