What can I do to be able to contribute to the forum?
What are you looking for from bitcointalk? You're asking about all the ways you've read about and yet somehow you're still uncertain. That tells me that you weren't driven here out of curiosity or a passion for bitcoin, especially since it's just a bizarre question in general to be asking the community of a discussion forum when they're new.
You either come here and know what to post or else you end up like so many below-average members that you can tell by the way they write and the contents of their posts they're only here to earn some money. That describes you to a T, right?
It occurred to me that I would challenge myself to be in the highest rank someday in a good and right way even though I only worked as a housemaid.
I swear I've read someone post something extremely similar to that before. If anyone else is getting that feeling and can do a magical search, I'd be much obliged.