[Storebror]

will creating the "Hello World" Program help me in creating and help me understand FM's and class files etc?

Yes for sure.
Hopping on one leg while drawing circles in the air with your left ring finger and shouting "father was a modding maniac" will take you to an even higher level.
You're the one telling us that you already modified FMs, checked it offline and want to see how it performs online, right?
See -> Announcements & General Discussions -> General Discussions -> unwelcome discussion topics

As long as you cannot provide any reasonable explanation for what you're doing, I'd rather advise all others


Best regards - Mike