The easiest way to combine 2 or more photo

Today we have more members in my group....We love fixing Photo right ???
But how about combine them ???
I saw a photo of Sarah Palin on internet wearing swim suit and holding a gun next to a swimming pool....Then I also saw a picture of Obama...at a beach... I just want to combine these photos...So I looking for Beach Photo...Before combine them I have to adjust the tone, color, brightness..and size....then just drag Sarah photo on the Beach photo...erase around her to show up the beach photo just keep her body...Then drag Obama photo on it...also erase around him just keep his body...Clone few detais...that s is ...
Type V to drag and drop...Type Y to erase the ontop layer..Control+Z then Control+Z+Alt if You want to redrag and drop it... Good luck...Aske me more details if You cannot do it...have fun...and tell your friends join my group...WE LOVE FIXING...