Old community forum
https://www.s2member.com/forums/forum/community/page/1/index.html
Special replacement codes
https://www.s2member.com/forums/topic/special-replacement-codes/index.html
Use a site page for PayPal auto return
https://www.s2member.com/forums/topic/use-a-site-page-for-paypal-auto-return-page/index.html
https://www.s2member.com/forums/topic/s2-login-widget-redirects-to-wp-login-php/index.html
WordPress Plugin forum
Max Simultaneous Logins, Prevent spam registrations
WP-Sharks forum
How can i hide part of the post?
https://forums.wpsharks.com/t/how-can-i-hide-part-of-the-post/2980
Tutorials
Configuring s2Member Restriction Options
https://s2member.com/kb-article/configuring-s2member-restriction-options/
Configuring custom return URLs upon success
https://s2member.com/kb-article/configuring-custom-return-urls-thank-you-pages-upon-success/
[s2Member-List /] Shortcode Documentation
https://s2member.com/kb-article/s2member-list-shortcode-documentation/
Github s2member-kb
https://github.com/websharks/s2member-kb/blob/master/tutorials/2015/143-creating-a-registration-thank-you-page.md