How to install s2Member Framework (Member Roles, Capabilities, Membership, PayPal Members) plugin:
Go to Wordpress admin area and click "Plugins" and then "Add New" menu item.
In the right panel (left top) you will see "Upload Plugin" button. Click the button.
Next click the "Choose file" button in right panel (center).
Select zip file of the "s2Member Framework (Member Roles, Capabilities, Membership, PayPal Members)" plugin located on your hard drive and press "Open".
Click "Install Now" and the zip file will upload to your site.
Now click "Activate" button to activate the "s2Member Framework (Member Roles, Capabilities, Membership, PayPal Members)" plugin.
We've tested following plugins published by: s2Member / WebSharks, Inc.