Quick question since people in this topic seem pretty knowledgeable about the game. Is arena for veterans only?

I can only seem to select the top 500 to view/attack, I'm ranked 42000ish. I've only been playing for about a week so I'm nowhere near the strength of a top 500. It would be nice to do something beside campaign, espicially since I'm starting to hit a wall and I'm not having enough coins to level my castle everyday.