basics being
Determine whether the argument is valid.
If you live in Anchorage, then you live in Alaska.
If you live in Alaska, then you live in the largest state in the United States.
Therefore, if you live in Anchorage, then you live in the largest state in the United States.
What do you do first?
First, determine the truth values of the premises.
The premises are true because Anchorage is located in Alaska and Alaska is the largest state in the United States.
Remember
Both premises need to be true for the argument to be valid.