How To Delete Backgrounds?

Hi,guys! What's the most efficient,quickest way to delete backgrounds? I mean,cut off backgrounds from detailed objects like chairs,bycicles,etc Is there any kind of mask that will wipe out all background at once?
Thank you very much!

There are TONS of ways to do it. It all involves a little skill and a little trial and error... and you have to make a selection of the object you want to extract.

I made a channel masking tutorial a while back.... it will show you the basics... http://cbutts.com/masking1

Or you can use the pen tool to make a path around the object to make the selection.

Past that one of the best teachers for learning about masking is to go:

> HELP

and search the help files for "masking"... adobe put in a pretty good description in the help files.