does anyone know how to raise and hoist down the ship's flags properly?
The national ensign should be hoisted briskly and lowered slowly. It should be displayed from 8 AM until sunset. It should be the first flag up and the last flag down when displayed with other flags on the same vessel.
In the Navy they taught us that the national ensign should be raised quickly and lowered slowly. But I'm only guessing since your question is a bit vague. It also depends on the situation and which flag. Jackstaff or maststaff?
It depends on the type of flags you are using and for what purpose.