Here is one of the main reasons Dark Age of Camelot is at equilibrium. Most long time players are able to use the /level command and go right to level 20, have tons of money to give their low level toons, can craft or buy player made gear or high level drops that people sell in housing, can powerlevel their own toons or have friends who can do it for them.
I started out as a Ranger and soloed most of my way to 50 on my first toon. That was so painful I acquired enough accounts and levelled a bunch of toons so I could power level whatever toon I wanted next. DAoC is a huge time sink, and that first character that you level will open other doors but will always be your first toon.
Task dungeons and kill tasks in Domnann are your best way to 20. Questing does take a long time, and sometimes the quested items aren't very good compared to what you could buy off the merchants.
My advice is to try and get into a decent guild, but don't expect them to do everything for you, most established players are busy killing the enemy or farming for cash, but most will help you more than when you not in a guild. At the end of the day, you are responsible for levelling your toon. Check out vnboards.ign.com and this site of course for some levelling strategies.