Sadly, there is not BST in EQ2. I was a 49 BST in EQ1 and had a blast. The closest thing you'll get to a pet class is Mage > Summoner > Conjurer (good) / Necromancer (evil).
Important thing to know is that you'll start as 1 of 4 classes, Fighter, Mage, Scout, or Priest. When you get to level 10, you select a specialty archtype path to follow. Then at level 20 you pick another specialty path to follow and you will be that final class forever more.
So if you start as a Mage, at level 10 you will have a choice of becoming a Sorcerer, Summoner, or Illusionist. If you pick Summoner, then at level 20 you will have your final choice to become a Conjurer or Necromancer.
A WoW Hunter with their fantastic bow skills would be a Ranger in EQ2. The path would be Scout > Predator > Ranger. They do great damage with a bow and are masters at the rear-attack.