help me with the rules please

Hello , im new in the forum and in the game. Im from spain and my english is not too good.
Recently y buy a elctric football game and i have more questions. I try to explain it but if somebody speak spanish, send me a Private message to ask the questions.

questions:

What makes a fumble?

What stops a runner with the ball?

if i decide make a pass move... When stop the game to make the pass?

if i decide make a run move... Do I need to inform my opponent witch player to take the ball before starting the game?

how do you know whitch player has the ball?

Thanks

And Sorry my bad english

greetings