Roth is the type of IRA. IRA means individual retirement account. A Roth IRA differs from a traditional IRA in that the deposit is not tax deductible for income tax purposes. Also, the gain over time...
No, unless it's a divorce or death issue.
You have to go to a securities licensed financial expert to set up an IRA :banks , financial advisers investment firms , etc.
Yes, anybody (US citizen) with earned income.
An IRA is an individual retirement Account. A Roth IRA is just a type of IRA. Traditional is another kind.