After the interview you can apply for the waiver.

If you mean attending classes, there is no prohibition. if you mean working, you need a work permit.

We have not been given any information about that yet. As a wild guess, perhaps 30 to 90 days.

If you are still married to, and living with the U.S. spouse, then you can file three years after you became a permanent resident. You can find...

They won't issue you an F1 that long before you start school. More like 30 days prior to starting.

It depends on who changed it and why. Trying to fix it could backfire and you could face a finding of fraud.

Yes he can file for a work permit and advance parole. No, there is no expedite fee.

A visa petition for a parent of a U.S. citizen includes only the parent and not any spouse or children.

There is no set number of days. It is very likely they will receive it eventually.

You should assume that it is true and you will have your oath ceremony and be a U.S. citizen.