Image-edting for beginners

Hi, i am pretty much of a noob and hope you can help me ;)

So what i want to do:

Cutting of an element from a picture and "implanting" it into another one.
Of course you need editing to adjust the element, so it acutally fits in the picture.

And how can you "implant" a element into a gif?
I mean it would be a picuture in motion, or?

Can you name some program, which are very easy to handle even for a noob?

Thanks for help.

>>10

Unfortunately it is not enough ;(.

The element of that picture does not fit in the other one just by "pasting" it in.

The perpective needs to be changed, the seize, and also most probably the light conditions.

Btw:

How can you edit a Gif?