Level 50+ questions

[Snugglebutt]

If mean like DoH/DoL level job skills at 52+ etc then yes you need to go Ishgard first, you learn them there. Each DoH/DoL job ARR NPC has a lvl 50 new quest which tells you to go to Ishgard which is where you continue from there rather than going back to ARR NPC's to learn new job skills etc. I think the same applies to DoW/DoM. With Dark Knight and Machinst the basic job NPC's are in Ishgard anyways but all the new trainers for even ARR jobs like Bard as an example after 50+ are in HW zones not ARR ones. The database I linked before will be able to tell you since it also list job/class quest lines for each DoW/DoM, DoH and DoL.