[Bear]

If you want "infinite" experience you can kill the ghost of Rumphy over and over again in the Crypt. If you want an exp boost, Paladins can get the Crusade trait (at Priest guild lvl 5 IIRC) which earns them double exp killing undead (lots of those at Shurugeon Castle). Once you get past Brimloch Roon almost all monsters give big EXP, so don't worry too much. You can also get more exp by setting your difficulty level to "Hard", the monsters have more hp and give more exp that way.