Learn an English sentence that you usually use in your language everyday. Once you get the hang of it, start learning grammar so that you know what word to be sorted in a sentence.
Vanilla mod. The feeling of the intended game design is best felt firsthand before anything else. I personally prefer to have the aesthetic cutscene of the original model, scripts, and glitches if any on first playthrough. On second playthrough though... God help me with the atrocious amount of...
Does mobile game count? If yes, I think mine would be on Nokia 3310 game called Space Impact.
Otherwise, I would say PS1 game called Sabrina the Teenage Witch. Not a big fan of the game, but it's the first console game I've played~
RPGM is basically a starting platform for RPG. There are way better platforms to play RPG nowadays, especially when the RPGM system is identical to one another. I'd argue that RPGM is mainly used for easy story-telling game with preset assets available to be used to fill up NPCs.