Hi there! Welcome to P99 and EQ. I too played WoW long before I wound up here.
This is a totally different ballgame. Its the ultimate grind. Be patient, the early levels will seem very boring. By 29 you'll be loving it.
Shaman is a fantastic class to play. You'll be wanted in groups and have the ability to solo as well. Start here:
https://wiki.project1999.com/Shaman
Then move on to:
https://wiki.project1999.com/Players:Adventure
I would read all of the shaman guides (minus Garfo's solo epic) and
An Iksar's Guide To Love and Friendship Through Murder if you're dead set on Iksar.
https://wiki.project1999.com/Wisewol...rchasing_Guide - a great guide for figuring out which spells need to be bought ASAP and which ones you can save your monies on.
Good luck! Reach out and talk to people in game...most of us like to help new players.