You can find tutorials or news here.
How to null Social Locker plugin
How to null Gravity Forms – The most complete WordPress form plugin
How to null WPAchievements plugin
How to activate WP Optin Wheel plugin
How to null WPDiscuz addons
How to null Gonzales – Premium optimization WordPress plugin
How to null WP Staging Pro – the best plugin for staging
How to null EventOn plugin and addons