I need some help

Hi, I am returning to guild wars after graduation, since I am getting a new computer for graduation, and I need some help.

I would love if someone could explain to me the most important stuff I need to know about the game between now and about a year ago. Any tips, helps, even updates would be greatly appricieated. I am of course going to do the nightfall campaign, and that will help. I also have like no money, a lvl 20 w/mo runner/farmer (can you even run with them anymore?) And I have a lvl 20 e/me Fire Nuker farmer. Basically any suggestions tips or anything would help as, looking at the game now, a lot has changed, and from what i can tell it has changed a lot.

Also, I'm not sure if this is the right section so if it isn't I am sorry.

http://gw.gamewikis.org/wiki/Game_updates

Correct forum would be Questions & Answers.

Here is a link to the Official Wiki (accessible in-game through Help or /wiki) which has all the updates.

http://wiki.guildwars.com/wiki/Main_Page

Come back again if you have specific questions.
Welcome to guru.

Ok, thanks to both of you yea I wasn;t sure if it should go there because all I saw was general questions, and I didn't think this was very general, but thanks I forgot all about wiki.