Hi! Thanks for the kind words!
There isn't a full tutorial for the plugin yet. Since PSX Retro Tools is based on authentic PlayStation 1 graphics techniques, I actually recommend watching a few videos about PS1/PSX art and stylization first. Once you understand how PS1 graphics worked and why they looked the way they did, the purpose of most of the settings in the plugin becomes much more intuitive
I do plan to make a complete walkthrough of every feature in the future. If there's a particular setting or workflow you're unsure about, let me know and I'll be happy to explain it in more detail
Also, the latest version includes built-in guides for the plugin's features