This is a long thread and I'm not sure if it's been posted.
Please utilize the wiki, because there's a lot of helpful info, but so much stuff it can be overwhelming. I was stuck for nearly 3 months being as this was my first rpg semi-mmo. Sure wish I knew about this site back then lol.
If you scroll down the page a bit under "player vs environment" it'll say "missions" which will basically give you an exact quest/mission guide to get through whichever campaign you're working on.
I'm certain some of you won't even need it, just in case tho
I actually use both as each one has certain data formatted better than the other.