Thanks shield

It's actually good that you're here cause you can answer any mechanical questions that anyone has while I'm gone
Yea, path of the berserker lets you hit stuff more frequently, prevents people from charming you/frightening you and then lets you frighten other people
path of the totem is a more spiritual form of barbarian where you can adopt certain characteristics of animals when you rage.
I.e.: Take half damage to everything except psychic (totem of the bear), gives you a buff as a leader (pack of the wolf), eagle lets you be more maneuverable. At other levels you get more aspects of the beast.
Nimu: Yep Dark elves still exist and I believe they worship the arch demon Lolth. Exiled from what? The underdark? The world isn't as hostile as Slate per say. It's more of the difficulty of finding water/food and as a spellcaster, evading the templars.
In general, what is trouble some are the animals that have adapted and managed to survive, and the raiders which go out and steal/enslave people.
I forgot to mention this but anything from the SCAG (Sword coast's adventurers guide) should be fine.