I have tanked in my last few mmorpgs, the latest being ESO.

I have just picked up FF XIV on PS4, I would love to tank, but have some concerns

Firstly PS4 ability bar, does this hinder tanks as they would need more than 16 abilities on call. (I doubt it but want to make sure)

Being new would lack of knowledge of boss encounters be too much of a hindrance? Should I go BRD until I learn the game?

Those are my two main concerns, I have questions on top of that but they are knowledge based. Like is WAR better than DRK. Best way to level and what crafting to focus on.

So any opinions or advise are welcome!