New Version 8.1 for WordPress is as easy an install as it gets. Simply visit your plugins section within wordpress and search for the Level Four Shopping Cart plugin.
Select install and activate the plugin and you are almost there. The process does involve linking 3 pages (store, account, and cart) to 3 of our shopping system sections, but it's a point and click, process within our custom settings panel.
For a full installation detailed help article, we offer a full visual tutorial HERE.