How to get to Ruins of Illsalin
Getting to the Ruins of Illsalin is easy! The fastest way here is by purchasing the Undershore Coral from the Guild Hall and taking the portal to Undershore. Once you're here just invis up and run southwest until you reach the zone line. If you aren't in a guild, a Druid or Wizard is able to port into this zone as well - just ask around!
Those of you without a guild or friends will have to take the PoK book to Nektulos Forest and run west to Corathus Creep. Then once in Corathus Creep run west through that zone until you reach Undershore.