Valid answers are only posted within 5 minutes on really easy questions. I've got my rep by finding the slightly trickier ones in subjects I know well and other people might not. (439 rep so far; I've only been a member for slightly longer than you.)
I also like to read the question and estimate what the person knows or doesn't, so sometimes if they seem like a new programmer I'll answer an already-answered question with more detail, links, tutorials, etc. The selected answer is usually the best one, not the first one. You also get rep from upvotes.
Also, stop worrying about scoring points. They're just points. Nobody really cares that much unless you've got > 10,000. Worry about helping people instead - it's much more satisfying!
(Oh - You also get 100 points for associating stackoverflow and meta.stackoverflow accounts. Thank you for that.)