You should not be in a mobile home if there is a tornado coming. Mobile homes are very susceptible to tornado damage and should be abandoned for sturdier shelter during a tornado warning.
Nothing
I'd be looking for safe shelter.
If you can see the tornado
Where you should go in your basement does not depend on where the tornado is coming from, but how the house and basement are arranged. You will want to be away from windows and preferably in a corner. If there is a small room within the basement, the walls can add protection.
yes!
If you are in a mobile home and a tornado is coming you should leave and find a sturdier structure nearby, preferably one with a basement or cellar. Some trailer parks in tornado-prone areas have communal underground storm shelters that you can go to.
If the tornado is close and approaching you, leave the vehicle for some sort of shelter, preferably underground. If you cannot get inside, lie in a ditch or depression in the ground.
You shouldn't. Contrary to popular belief opening windows during a tornado does nothing to save a house and may in fact make damage worse. If a tornado is coming opening windows is a waste of precious time that you should use to take cover.
There is no way of knowing when the next tornado will be in any given place.
If no shelter is available a ditch is your best option as a last resort.
The best thing that people can do is to pay attention to weather advisories so they can no when a tornado is coming. When a tornado threatens, people should get to some underground shelter or get to the interior part of a sturdy house or building.