Just in case you were wondering about languages. There are three major languages in (My)Oerth: Keolandish, Imperial and Payrim. The different races of elves all have their own languages. I do not play using alignment languages.
Other than that it is pretty standard (Orc, ogre, goblin, bugbear, etc). Mages and Clerics may be interested in taking ancient Baklundish or Suloise in case some ancient magic is found.
The barbarians to the north (Sueli) have their own dialect as well, but it would be extremely unusual for anyone to speak it. However, Talas would have a reason to know it.