I would definitely follow the above advice, Scrap your warrior, they have very very limited uses, only a minuscule range of areas that they can farm well. And, even some of the places that they farm well, aren't worth it, as the rewards are near useless or make very little money. Personally if it were me, i'd put your warrior on the back burner until you're more experienced and know what to use him for. For now, you said you had all 3, campaigns, unfortunately you don't have eye of the north, which i recommend you should get immediately as it's the easiest way to level characters, as you can get to level 20 within 3 hours, even w/ little experience and the help of WiKi and/or this forum. But, make a Monk or Assassin in _Factions_ campaign (factions is the second quickest route for leveling characters) i would suggest monk first, as for me, this was how i gained most of my experience in guild wars, and it's probably a bit easier to learn/grasp the concept of farming, and what to farm, and how etc. Assassin is a good choice, because currently, they have many many uses, and are extremely "powerful" especially for farming. Save up every gold coin you make, every material, once you have a few bucks, i'd say 20-30k, you can buy max armour it wont be elite armour, but it'll be max, and if you get a proper set, it wont look too bad at all. with the rest of the money, you can buy the weapons/tomes/other gear you may need to start "farming".
Also, especially if you chose a monk, which i again stress, you should.
but, if you happen to chose a monk, as soon as you reach Kcenter "Kaineng Center" in Factions, it's the main outpost/hub for the campaign, You will receive a message about traveling to Elona(NightFall Campaign) , i would highly recommend you do that, asap before progressing any further in factions, as you will receive heroes, which are henchmen that you can control/customize their builds/weapons/armor everything, and they are EXTREMELY useful/handy for farming, some farms require that you have hero, or a second person, but you'll learn that sometimes a hero is more profitable for yourself, depending on what you're doing.
Anyway, sorry to lay all this down on you, i hope i did not confuse you too much, and if you'd like send me a private message here with your IGN (in-game name), and i wouldn't mind helping you a little in my free time, whether it's with a warrior, or not. Either way.. good luck and have fun, and have patience, to successfully make money, it takes experience, and patience, and the will to try new things.