Hello!
While I'm not on your server, meaning it'd be difficult to help you and impossible to do so at level 60, you may have better luck asking around the Leviathan World forum. You may also want to consider putting up a Party Finder ingame. If you mention it's your first go, people may want to take advantage of your bonus tomestones you'll provide them.

Best of luck in felling the Dreadwyrm!