I'm really aware of C++. And i would like to learn much simplier language. Also i might misunderstand Enigma functions
Of course you can, I use EDL, GML and C++ in most of my projects.
The whole ENIGMA engine is C++ and the GML/EDL you are using are C++ functions in the engine
I've parted from G**MakerStudio. Just keep mind your EDL/C++/GML mixed projects will obviously not be compatible with GMS as GMS only allows GML
Also as far as EDL/GML it cannot get anymore simpler than that, you can consult the wiki docs and read how each function works, you can ask questions here on the forum for more clarifications, etc.
When I started using G**Maker I used D&D, but quickly moved towards code, and now I do everything by code 100%, faster, and so simple. If you are already familiar with logic, variable/types, and the basics, you will learn fast the rest that follows.