Yesterday i decided to get the game reinstalled(original GW,no expansions)and try and get my lvl 19 necro to 20.
I remembered now why he is still 19

Its the end bit where you have to kill Justiciar Hablion.
I remember joining a few groups that failed a few times and i could never do it on my own with henchmen.
Same problem now and tbh i really dont feel like i can trudge through the route and kill the mobs,collect seeds again.
Is there anyway to advance through the game because it seems i cant get to 20 unless i find some new quests or missions.
I found some place that someone sent me to but i think that was some sort of lvl 20 place that i wasn't ready to go to?
I'm very confused with the game after being spoon fed through warcraft.At level 19 it feels that i dont know anything about the game and have been trapped in my own little instance.
So i have a few questions for if i do get to 20.
Firstly are there some sort of "dungeons" that 20's run.
Why do people farm and where can you buy stuff from people and why would
you want to buy anything?I didn't think there was "gear" as such.I don't think i've seen any vendors,unless i forgot during the 6 years and i've not seen anyone selling anything in chat.
Can you only pvp by making a pvp character?
In pvp you can only have a small amount of abilities,so what makes GW pvp so skillful? I hear it is..I have done a bit before and i did get owned

Is there anything i need or should buy expansion wise?
Thanks if anyone can answer my noob questions.