User blog comment:GandalfTheGray1/Weapon Farming and Experience Farming/@comment-2207030-20120508142747

At lvl 59, you are already pretty overlvled lvled to start any of the DLC. Out side the DLC, The Eridian Promintory is the best XP farming area. Once in The Knoxx DLC, you will lvl up fairly quickly just playing the game. Knoxx himself gives good XP and doing the Armory exploit will net you good weapons.