This video shows you how to replace a front strut on a 2014 Ford Fusion. This should work for Ford Fusions from 2013 to 2018 as the design has not changed.

My battery in my camera died about half way through but it has all the important parts on how to remove the strut and describes how to install the new one.

I purchased Monroe Struts with the coil on them form RockAuto (https://www.rockauto.com/en/catalog/f.... They have the best selection of most parts and are almost always cheaper than everyone else.