Lost and Overwhelmed... Returning to the game after super long break

[Risvertasashi]

just do MSQ, like u i casme back after a very long break, ignore everything else, ironworks, relic, etc and just do MSQ, those quests will eventually give u gear putting u at iLevel 110-120

To add to this, a lot of the level 50 content is pretty dead. Hopefully SE will update it somehow, but I wouldn't recommend trying to gear up in the more traditional ways. As others have said... MSQ all the way. Then when you hit heavensward you can go from there.