My render view is black! And how can I rotate a spherical object?

Hello! Good morning, excuse me to stop them in your navigation of the page but I need urgent help.
I’m a newbie in the animation, and I’m helping my girlfriend make a 20 second clip.
However, when I click on “Render view” it looks all black, but when I put some color, it is seen along with that black background.
Is there any way to remove that?

In the second help I need to know simply how I can rotate an object.

I have time limit, so please hope you can help me :frowning: