I came across this series of videos on Roleplaying in an MMORPG, with emphasis on FFXIV, recently. It's a fairly decent introduction, and I think it's vastly under watched at this point.
So, I'll point you to the series, created over the past 5 months, and let you decide if it's worth a look.
https://www.youtube.com/watch?v=qYZa...AFoZBPiwngP_sb