halflifefan:
Go Here
Find the Bridge to where you start. From there you need to travel North East till you reach the "C" in Cenae Meadows. From there, jump on a Hippo and wait for it to take you across to Cor Village.
Or you could raft to Cor village =D

http://forum.nexon.net/Mabinogi/forums/thread/3567505.aspx (Link for giant's quest)