how to take a screenshot on windows

How do I take a screenshot?

hold down

⊞ Win

and

Shift

and press

S

=

Use your mouse to draw a rectangle in order to specify what to capture. Windows then copies it to the clipboard.

I guess it’s in the clipboard now. How can I paste it into a document or something?
hold down	Ctrl	and press	V	=	Windows pastes the screenshot (that is in the clipboard) into a document or image you are currently editing.
Where should I paste it? I just need a (graphics) file.
Start “Paint” Paste Save
Is there a dedicated program for taking screenshots? How can I find it?