If you are in Freeport i would suggest finding one fighter or perhaps two
and go to oasis. You meditate and heal your fighters. When you have the
mana up you can take a few swings at those crocs and caimans aswell. This
should work swell up to 19. The only drawback is the money. You wont get
any what so ever. But Xp wise it's brilliant. If you want to solo i can
suggest SRO. Usually pretty empty there (at Solusek Ro atleast). There you
can kill ghouls, tarantulas and dry bone skels (easy with those).
Hope it might help you.

I come in peace ..
<><>Bracket Starreach of Solusek Ro<><>