Q: Pls. teach me how to use automator in an easy way. =) Thanks!

Start with this:

http://support.apple.com/kb/HT2488

and this:

http://macapper.com/2007/05/28/tutorial-automator-basics/

Also http://www.macosxautomation.com/automator/

If you are a visual learner search the iTunes store for the Mac Automation Made Simple with Ben Waldie podcast. Some of the episodes pre-date Lion but most of the concepts he explains are stil applicable. The podcast is free if I remember correctly.