Hello...

welcome @trxerz to Centmin Mod Community and glad to hear Centmin Mod has been useful

Threads to read, pages to bookmark and threads to watch/subscribe to get to know Centmin Mod would include:

• Getting Started Guide
• How to install Centmin Mod .07 thread - I update this thread with changes to the .07 series code, updates for security fixes or bugs. So worth bookmarking and watching/subscribing to the thread to be notified of changes. Thread also outlines how to update Centmin Mod via the zip download replacement method. Or if you're familiar with git from command line, check out git command line updating Centmin Mod code.
• Centmin Mod .08 beta thread - same concept, bookmark, watch / subscribe for changes. As .08 is beta alot of updates, changes or fixes get committed to the code. Thread also outlines how to update Centmin Mod via the zip download replacement method. Or if you're familiar with git from command line, check out git command line updating Centmin Mod code.
• How to troubleshoot initial installs (as well as find the log files for all software for troubleshooting).
• Centmin Mod + Youtube Resources - recently created to illustrate visually what Centmin Mod can do. Alot of the vidoes are to showcase Centmin Mod .08 betas features which eventually will become the next stable release.
• All things SSL https related at SSL - HTTPS as a Google ranking signal | Centmin Mod Community
• Centmin Mod Insights forum - delve deeper into Centmin Mod code if you want to tweak it or extend it yourself. Find out how PHP Opcode cachers like APC Cache, Zend Opcache and Xcache are configured and installed and how Memcached server is setup etc.
• Several ways to follow Centmin Mod code development and changes/commits via Github Commit forum or directly on Centmin Mod Github repository - 123.07stable and 123.08beta03 branches
• For forums, also check threads in dedicated Forum Software Usage forums. Some Xenforo users including myself have posted out Nginx vhost configs at Xenforo - My Xenforo Nginx vhost configuration | Centmin Mod Community
• For Nginx Pagespeed check out the official site page for Centmin Mod's integration of ngx_pagespeed module. Also check out the prefix linked forum url Nginx, PHP-FPM & MariaDB MySQL | Centmin Mod Community easy way to jump into all threads and info related to ngx_pagespeed. In particular bookmark the Nginx PageSpeed Troubleshooting sticky thread as there is high chance you need to tweak your Nginx pagespeed.conf config file for your web apps and styles used. You can see an example of this forum's pagespeed.conf tweaked for Xenforo and my particular used Xenforo style/theme and some discussion of troubleshooting advertising and ngx_pagespeed.