If you are an int Osamodas you can go to piglets. Get yourself a toh'lo hammer and find those maps where you start close to the piglets, then just run and hit. The Experiente wont be great, but the fights won't last more than 30 secs. Do it until you get POC, then you can solo sungi masters very easily (whip lvl5 is very important).
If you are Chance osamodas, you can try small mobs os fungi masters (one fungi + some flowers). Just hit them with lashing claw, this will take some time, but the XP will be great. At 55 buy a tortoi hammer and start looking for a 8 AP set, this will make you kill fungi masters much faster.
If you are a summonner, try some lonely kanigers. Gobball + toad + High Energy Shot should be enough. Fights will be very boring, but the XP will be great.