I do not know how to copy and paste but on the internet I am always told to do this How do I do it?

I do it by holding down the shift key. Then I run the arrow key over the text I want to copy. Then I have a darkened section of text that I want to copy. (I always have a clear space or two after that text.) Then I go to the Edit Command. Then I press COPY. Then I move the cursor to the place where I want to paste such as here. I do it by holding down the shift key. Then I run the arrow key over the text I want to copy. Then I have a darkened section of text that I want to copy. (I always have a clear space or two after that text.) Then I go to the Edit Command. Then I press COPY.