Please Advise and also give me good websites for buying properties in a very good area, I don’t want to buy a house then fly in the wind few months later.

I wonder if I have to take it down every night and put up every morning by law.
Sometimes I get home from work late, fall asleep and forget to do it. Am I been offensive towards our flag?
What if I go on Vacation? Should I take it down during those days?
Should the pole be in front of the house or next to it?
I just bought my house and would like to do things right.
Thanks for your answers