How do you earn reputation when trying to start on Stack Overflow? Typically, I'm programming in C# at work, using and consuming SO threads several times a day.

I'd be able to up/down many answers each time I use SO but can't without reputation. Unfortunately I won't ask new questions since almost anything I wonder has been answered already. And I won't answer questions since almost anything I would answer has been told already.

I really want to participate but don't really know how. Please tell me how to do it, old lads!