At the East end of the zone, at the very North end of the zone is a road to a gate, go through the gate and your in Rivenspire. There is a farm you have to do things at before you get to the main city in that zone. Note the Spider Boss just next to the gate is pretty tough, if you take it on, make sure you take out the spider on the right first, it can bug out and go into a wall and then you can't finish the boss. There is also a skyshard up there.
Note, once you finish Rivenspire, you use a boat to get to Alikir. You catch the boat at the Northpoint Docks. Alikir is one of the zones you can't really get to any other way. The game tells you this, but of course I ignored it, then spent an hour trying to figure out how to get to Alikir....