Q: how can I use mac

Hello Shiva,

your new mac is not difficult - only different If you are "good in computers", I am sure you will figure it out pretty soon.

The easiest way to get started with photo editing on the Mac would be iPhoto, and for movies use iMovie - both Applications should have come with your mac preinstalled.

There are some good introductory videos http://support.apple.com/videos/, e.g. for iMovie iMovie '11: Import video, or browse the support pages for iPhoto http://www.apple.com/support/iphoto/ and iMovie iMovie '11: More support

Regards

Léonie

Apple has a  "Find out How"  web site which is prettty good:

http://www.apple.com/findouthow/mac/

Perhaps you might wish to start with learning the terminology:

OS X Lion: Learn common Mac terms

http://support.apple.com/kb/PH4538, and then continue from the support pages I pointed to in my first post.

Also it might help to read through a good introductory book; pick any from this list; http://www.prweb.com/releases/2011/7/prweb8650879.htm

Regards

Léonie

Switching from Windows to Mac:

http://support.apple.com/kb/HT2514?viewlocale=en_US

and

http://support.apple.com/kb/HT2518?viewlocale=en_US