This thread will probably always have plenty “necroposts” from people because it’s the #1 ranked result on Google for “how to level up fast in Guild Wars 2”.
That said, there’s plenty of good information here, which is part of the reason why it’s so highly ranked, and why people keep returning to it and adding more current information!
I’m using it to rank up a Warrior past the starting zones (which I’ve done repeatedly on every other character so far).