ARMember is the Best Free WordPress Membership Plugin with a wide range of features, great performance, and a great modern interface. It’s easy to install and use. As compared to other widely-used membership plugins, ARMember has significant advantages.

You can create different plans like free plans, finite/infinite paid plans, and Subscriptions with auto auto-recurring payment facility with ARMember.

Installing the Plugin

1. Download the FREE ARMember from the link below:
   https://wordpress.org/plugins/armember-membership/

Optionally, buy and download the Pro version –
https://www.armemberplugin.com/pricing/

2. Extract the downloaded armember-membership.4.0.30.zip file to the WordPress plugins folder yourhostname/wordpress/wp-content/plugins
   OR
   Go to your WordPress Dashboard > Plugins > Add New. Click the Upload Plugin button. Browse to the download file location, select the armember-membership.4.0.30.zip & install the plugin.
3. Click the Activate Plugin button to activate the ARMember plugin on your website. OR
   To activate the plugin on your website site go to WordPress Dashboard > Plugins and click the Activate button for ARMember.

Setting Up the Plugin

1. From your WordPress dashboard > ARMember > General Settings. 
2. Make the preferred changes to the settings and then click the Save Changes button.

Add New Membership Plan

1. Go to ARMember > Manage Plans > Click Add New Plan.
2. Enter a title and description for the Membership plan.

3. Configure the Plan Type and Price.
4. Once done, click Save. 

For further setup and usage tutorials, refer to the official documentation of ARMember.