photoshop and crop 3 pictures

I have 3 pictures that need to be photoshoped and cut the picture out of the background so i can put it onto a white background. all these pictures need to be high resolution as they will be printed in life size on the side of a bus. I want the car with the 2 people in it to cut the outline of the car and the people in the car and then photoshopped so the light is brighter for a large picture. cut the shadow out of the picture. I want the 2 people cut out of the car and saved as a new picture Cut the background out of the Back of the car with no people in it .save this picture Put the 2 people into the new car and save this picture with no background Put sign writing onto the Timber sign with the rope . Writing to be : JUST MARRIED font in : word : Candara please do 2 copies of the Just Married sign, one with black writing and one with white. then cut the sign out so i can put in onto a background and the area under the rope needs to be see through so i can put it over a different backgroud. then photoshop the sign so it is hanging from the back of the car with the new people in the back so thats 8 saved pictures in high resolution that need to finished and photo shopped please