Meta Slider is a great plugin to have for developers to create a homepage image slider for a custom WordPress Website. It has many simple to configure options and you also can incorporate this plugin into various free WordPress themes that does not come with a home page slider. Check it out at: https://wordpress.org/plugins/ml-slider/
Here is the documentation to integrate it easily into the many free WordPress themes:
metaslider.com/documentation/category/theme-integration/
Enjoy!