Photoshop/Elements: How do I remove a background from an image or merge images?

This reply was created from a merged topic originally titled How do I put another person or animal into another picture.

Picture of children in a wooded area would like to place a bear behind them.

This reply was created from a merged topic originally titled Stitching a face into an existing photo.

I want to stitch a face into an existing photo... How do I know if I can do that right now without buying further products or upgrading?

This reply was created from a merged topic originally titled Merging two different photos into one.

Using photoshop elements 7, I am attempting to make one photo out of two photos of different people. Am newbie so need help. Thank you. Dee.

This reply was created from a merged topic originally titled Black Background with a Flower Layer.

I would like to have a Black Image with a Flower Image layered on top of the Black background.

Can this be done?
If so, How would I do this?

This reply was created from a merged topic originally titled How can I move part of a photo to another one.

How can I move part of a photo to another photo?

This reply was created from a merged topic originally titled Background removal - easiest way?.

We've done a fashion shoot for the boutique we work at but need help finding the easiest way to remove the background to plain white. 

In the original photo, we have a soft white background but you can see the fabric creases and waves of the sheet.

How do you remove the background fast and easy and how do you remove the background from hair without making it look fake or choppy? 

Thanks in advance.