Either way the gutter brackets should clip around the top of the half round gutter length to hold it securely in place.
How to install gutters on a metal roof.
Crimp three times across both long edges and twice on the narrow sides.
For self assembly the easiest way is to use a suspended type of structure which provides for fastening the gutter to special hooks located along the eaves.
If you are using metal materials you may need to slide the gutter into the gutter brackets from the opposite end.
Crimp one end of the short length of downspout with a special sheet metal crimper.
If you don t want to remember to clean your gutters or you don t find balancing on a ladder to be a safe fun way to spend your weekend you can install a gutter cover.