WordPress.org

1. Upload the whole plugin folder to your /wp-content/plugins/ folder. It will give you two plug-ins: Hackadelic Series Admin and Hackadelic Series Front-End. (The reason why these are separate plug-ins is described in the plug-in announcement.)
2. Go to the Plugins page and activate one or both of the plug-ins.

Hackadelic Series Front-End uses Sliding Notes to provide an ajax-style expandable series index. It therefor requires Sliding Notes to be installed (otherwise you'll see the raw shortcodes only).