I saw so many amazing callouts and plugins. I really wanna know how to make them but don't know where to start or any video that can help me get started 

LSPDFR plugins are class libraries that works on .NET Framework and placed into the plugins folder and loaded by LSPDFR at the runtime via Reflection (dynamically on the-fly), so if you want to develop LSPDFR callout packs or plugins, you'll need:

• .NET Framework 4.8
• Visual Studio 2022 or any other IDE that supports .NET 4.8 & RAGE (MonoDevelop treats RPH SDK as an empty assembly, as it was not built like a standard reference assembly), and even Visual Studio Code
  • With .NET Desktop Development workload
  • You can untick these to save disk space:
    • ML.NET Model Builder
    • Live Share
    • Entity Framework 6 Tools

You create a plugin project by creating a Class Library (.NET Framework) and referencing RPH via NuGet & reference LSPDFR's assembly (dll) file.

You can check the API Development section pinned topics to find things to get you started.

 

Also, it's worthy to check LMS's GitHub repositories (called LMSDev), though it's somehow not being updated now, it has things like tutorials and examples.